{"id":8149,"date":"2019-11-18T17:35:28","date_gmt":"2019-11-18T09:35:28","guid":{"rendered":"https:\/\/www.humicchina.com\/?p=8149"},"modified":"2025-06-26T15:00:29","modified_gmt":"2025-06-26T07:00:29","slug":"humic-acid-prevents-and-controls-heavy-metal-pollution","status":"publish","type":"post","link":"https:\/\/www.humicchina.com\/pt\/blog\/humic-acid-prevents-and-controls-heavy-metal-pollution.html","title":{"rendered":"\u00c1cido h\u00famico previne e controla a polui\u00e7\u00e3o por metais pesados."},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-7324 size-full alignnone\" src=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-s.jpg\" alt=\"Humic acid prevents and controls heavy metal pollution.\" width=\"800\" height=\"366\" srcset=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-s.jpg 800w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-s-300x137.jpg 300w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-s-768x351.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\r\n<p>Produtos relacionados: <a href=\"https:\/\/www.humicchina.com\/humic-acids\" target=\"_blank\" rel=\"noopener noreferrer\">\u00c1cido h\u00famico<\/a>, <a href=\"https:\/\/www.humicchina.com\/super-potassium-humate-flakes-granule-crystal-powder\" target=\"_blank\" rel=\"noopener noreferrer\">Humato de pot\u00e1ssio<\/a>, <a href=\"https:\/\/www.humicchina.com\/mineral-fulvic-acid\" target=\"_blank\" rel=\"noopener noreferrer\">\u00c1cido fulvico<\/a><\/p>\r\n<p>O solo \u00e9 um recurso natural indispens\u00e1vel e n\u00e3o renov\u00e1vel dos seres humanos.\u00c9 a base material da qual os seres humanos dependem para a sua sobreviv\u00eancia. O solo tem a capacidade de produ\u00e7\u00e3o para apoiar o crescimento das plantas. Ao mesmo tempo, ele tamb\u00e9m tem a capacidade de assimila\u00e7\u00e3o e metabolizar materiais externos como material do solo.<\/p>\r\n<p>E tem a capacidade ambiental de transportar uma certa carga de polui\u00e7\u00e3o. Portanto, o solo tamb\u00e9m \u00e9 freq\u00fcentemente usado como um purificador para proteger o meio ambiente. Quando os poluentes excederem a capacidade de absor\u00e7\u00e3o do solo, a polui\u00e7\u00e3o do solo ocorrer\u00e1, resultando em problemas de seguran\u00e7a alimentar.<!--more--><\/p>\r\n<h2><span style=\"font-size: 14pt;\">Sol\u00favel <a href=\"https:\/\/www.humicchina.com\/humic-acids\" target=\"_blank\" rel=\"noopener noreferrer\">\u00c1cido h\u00famico <\/a>(<a href=\"https:\/\/www.humicchina.com\/super-potassium-humate-flakes-granule-crystal-powder\" target=\"_blank\" rel=\"noopener noreferrer\">Humato de pot\u00e1ssio<\/a>(P)<\/span><span style=\"font-size: 14pt;\">Reviver a polui\u00e7\u00e3o por metais pesados<\/span><\/h2>\r\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-7502\" src=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/1-191023154014151.jpg\" alt=\"\" width=\"729\" height=\"425\" srcset=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/1-191023154014151.jpg 729w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/1-191023154014151-300x175.jpg 300w\" sizes=\"(max-width: 729px) 100vw, 729px\" \/><\/p>\r\n<p>Modificadores do solo, como cal, fosfato, \u00f3xido de zinco, p\u00f3 de fosfato, fertilizante org\u00e2nico e mistura de quelato EDTA s\u00e3o aplicados em casa e no exterior para precipitar metais pesados na forma de carbonato e fosfato. Ou para ser adsorvido por mistura de quelato. A fim de reduzir a sua atividade e reduzir ou evitar a polui\u00e7\u00e3o de metais pesados em produtos agr\u00edcolas.<\/p>\r\n<p>Al\u00e9m disso, a ado\u00e7\u00e3o de ajuste da estrutura de plantio \u00e9 uma medida t\u00e9cnica agr\u00edcola eficaz e vi\u00e1vel para reduzir a polui\u00e7\u00e3o por metais pesados nos alimentos. Flores n\u00e3o comest\u00edveis, mudas florestais, culturas de gramado verde e culturas e variedades anti-polui\u00e7\u00e3o por metais pesados ser\u00e3o plantadas nas parcelas contaminadas por metais pesados.<\/p>\r\n<p>Os resultados mostram que a combina\u00e7\u00e3o de fertilizante \u00e1cido h\u00famico e melhorador de solo relacionado (<a href=\"https:\/\/www.humicchina.com\/super-potassium-humate-flakes-granule-crystal-powder\" target=\"_blank\" rel=\"noopener noreferrer\">Humato de pot\u00e1ssio,<\/a><a href=\"https:\/\/www.humicchina.com\/mineral-fulvic-acid\" target=\"_blank\" rel=\"noopener noreferrer\"> \u00c1cido fulvico<\/a>Com as medidas acima, \u00e9 um m\u00e9todo de controle abrangente barato e eficaz.<\/p>\r\n<h2><span style=\"font-size: 14pt;\">O humato tem o efeito de complexar para fixar metais pesados e reduzir a atividade dos metais pesados.<\/span><\/h2>\r\n<p><img decoding=\"async\" class=\"alignright wp-image-7537 size-medium\" src=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/1-19103015501AO-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/1-19103015501AO-300x200.jpg 300w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/1-19103015501AO.jpg 768w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\r\n<h3><span style=\"font-size: 12pt;\">Caracter\u00edsticas do \u00e1cido h\u00famico<\/span><\/h3>\r\n<p>O \u00e1cido h\u00famico cont\u00e9m grupos carbox\u00edlicos, grupos hidroxilo fen\u00f3licos e outros grupos funcionais ativos. Com hidrofilicidade, adsor\u00e7\u00e3o, troca i\u00f4nica, complexa\u00e7\u00e3o, REDOX e atividades biol\u00f3gicas. A aplica\u00e7\u00e3o de \u00e1cido h\u00famico ao solo pode causar v\u00e1rias rea\u00e7\u00f5es qu\u00edmicas, como adsor\u00e7\u00e3o, troca i\u00f4nica, REDOX e quela\u00e7\u00e3o com os \u00edons de metais pesados sol\u00faveis em \u00e1gua e adsorvidos biodisponibilidade. Para que os \u00edons de metais pesados possam ser fixados por complexa\u00e7\u00e3o e chela\u00e7\u00e3o ou adsorvido. Reduzindo a biodisponibilidade de \u00edons de metais pesados e reduzindo a quantidade de absor\u00e7\u00e3o da planta.<\/p>\r\n<h3><span style=\"font-size: 12pt;\">Resultados experimentais<\/span><\/h3>\r\n<p>Um grande n\u00famero de dados experimentais provaram que a aplica\u00e7\u00e3o de modificadores do solo, como cal, \u00f3xido de zinco, apatita e outros modificadores do solo para aumentar o pH do solo. O que pode fazer os metais pesados precipitarem na forma de carbonato, fosfato, sulfato e reduzir a disponibilidade biol\u00f3gica. O cal e outros melhoradores s\u00e3o aplicados juntamente com \u00e1cido h\u00famico e fertilizante org\u00e2nico. Porque a cal pode promover a complexa\u00e7\u00e3o do \u00e1cido h\u00famico para metais pesados. Melhorar o efeito de preven\u00e7\u00e3o e controle da polui\u00e7\u00e3o por metais pesados.<\/p>\r\n<h3><span style=\"font-size: 12pt;\"> Experimento de remedia\u00e7\u00e3o de solo de arroz contaminado por cobre e zinco <\/span><\/h3>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7326  alignnone\" src=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-u.jpg\" alt=\"Humic acid , fulvic acid, potassium humate prevents and controls heavy metal pollution.\" width=\"848\" height=\"565\" srcset=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-u.jpg 609w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-u-300x200.jpg 300w\" sizes=\"(max-width: 848px) 100vw, 848px\" \/><\/p>\r\n<p>O estudo e experimento de remedia\u00e7\u00e3o de solo de arroz contaminado por cobre e zinco no norte de Taiwan por Xu Zhengyi, mostrou que quando a aplica\u00e7\u00e3o combinada de \u00f3xido de c\u00e1lcio com fertilizante verde, apatita e \u00e1cido h\u00famico, o efeito de fixa\u00e7\u00e3o de cobre e zinco foi melhorado.<\/p>\r\n<p>E a concentra\u00e7\u00e3o de biodisponibilidade de cobre e zinco foi reduzida. Quando aplicamos cal, \u00f3xido de zinco e composto para tratar a remedia\u00e7\u00e3o do solo contaminado, o pH do solo aumentou de 5,4 para 7,5.<\/p>\r\n<p>De acordo com os resultados dos testes, o efeito de fixa\u00e7\u00e3o de c\u00e1dmio com cal e composto tamb\u00e9m foi melhor do que o com cal sozinho. O conte\u00fado de c\u00e1dmio nos gr\u00e3os de trigo atingiu o padr\u00e3o higi\u00eanico de Taiwan. No entanto, composto org\u00e2nico e \u00f3xido de zinco n\u00e3o tiveram efeito significativo na redu\u00e7\u00e3o do teor de c\u00e1dmio nas sementes de trigo. Alguns experimentos mostraram que a neutraliza\u00e7\u00e3o do pH do solo acima de 6,5 minimiza a absor\u00e7\u00e3o de merc\u00fario pelas ra\u00edzes das plantas.<\/p>\r\n<h3><span style=\"font-size: 12pt;\">Pesquisa e an\u00e1lise sobre o teor de oxalato de chumbo, c\u00e1dmio e merc\u00fario de metais pesados<\/span><\/h3>\r\n<p>A pesquisa e an\u00e1lise de Xiang guodong, etc. sobre o conte\u00fado de oxalato de chumbo de metais pesados, c\u00e1dmio e merc\u00fario sob diferentes tratamentos de irriga\u00e7\u00e3o de pasta de \u00e1cido h\u00famico (<a href=\"https:\/\/www.humicchina.com\/super-potassium-humate-flakes-granule-crystal-powder\" target=\"_blank\" rel=\"noopener noreferrer\">Humato de pot\u00e1ssio,<\/a><a href=\"https:\/\/www.humicchina.com\/mineral-fulvic-acid\" target=\"_blank\" rel=\"noopener noreferrer\"> \u00c1cido fulvico<\/a>Os resultados mostraram que, cada aplica\u00e7\u00e3o de tratamento de 15 kg \/ mu reduziu significativamente o teor de chumbo.  E o conte\u00fado de c\u00e1dmio e merc\u00fario foi maior do que o do grupo controle. O conte\u00fado de tr\u00eas metais pesados foi significativamente menor do que o do grupo controle. A segunda irriga\u00e7\u00e3o de 5 kg \/ mu n\u00e3o teve efeito na redu\u00e7\u00e3o do conte\u00fado de 3 tipos de metais pesados.<\/p>\r\n<h3><span style=\"font-size: 12pt;\">Nossas pr\u00f3prias experi\u00eancias <\/span><\/h3>\r\n<p>De acordo com o nosso teste do l\u00edquido de lixivia\u00e7\u00e3o de fertilizante e fertilizante s\u00f3lido de \u00e1cido h\u00famico, o pH do l\u00edquido de lixivia\u00e7\u00e3o de fertilizante alcalino diminuiu gradualmente de 8,22 para 6,84. E o pH do l\u00edquido de lixivia\u00e7\u00e3o do fertilizante do fertilizante mudou de alcalino para neutro. Enquanto o pH l\u00edquido de lixivia\u00e7\u00e3o do fertilizante qu\u00edmico diminuiu gradualmente de 7,95 para 5,43.<\/p>\r\n<p>A faixa dos dois lixiviados \u00e9 de 1,38 e 2,52, respectivamente. A regula\u00e7\u00e3o constante do fertilizante \u00e1cido h\u00famico no pH da solu\u00e7\u00e3o do solo resultou em diferen\u00e7as significativas na condutividade el\u00e9trica do l\u00edquido de lixivia\u00e7\u00e3o. A condutividade el\u00e9trica do fertilizante \u00e1cido h\u00famico foi menor do que a do fertilizante qu\u00edmico e do l\u00edquido de lixivia\u00e7\u00e3o do solo. Indica que o fertilizante de \u00e1cido h\u00famico pode reduzir a concentra\u00e7\u00e3o de metais pesados na solu\u00e7\u00e3o do solo.<\/p>\r\n<h3><span style=\"font-size: 12pt;\">Efeito do \u00e1cido h\u00famico em metais pesados<\/span><\/h3>\r\n<h3><span style=\"font-size: 12pt;\">A aplica\u00e7\u00e3o de subst\u00e2ncias de \u00e1cido h\u00famico para prevenir e controlar a polui\u00e7\u00e3o por metais pesados<\/span><\/h3>\r\n<p>A aplica\u00e7\u00e3o de subst\u00e2ncias de \u00e1cido h\u00famico que ajudem a prevenir e controlar a polui\u00e7\u00e3o por metais pesados deve ter em conta o tipo, a quantidade de aplica\u00e7\u00e3o, o m\u00e9todo de aplica\u00e7\u00e3o adequado, o tempo, o tipo e a forma de polui\u00e7\u00e3o por metais pesados. Mas olhe a partir de agora os dados do teste mestre, a aplica\u00e7\u00e3o de alcalino <a href=\"https:\/\/www.humicchina.com\/65-potassium-humate\" target=\"_blank\" rel=\"noopener noreferrer\">Humato de pot\u00e1ssio<\/a>, <a href=\"https:\/\/www.humicchina.com\/40-sodium-humate\" target=\"_blank\" rel=\"noopener noreferrer\">Humato de s\u00f3dio<\/a> e modificador de pol\u00edmero de humato de c\u00e1lcio, ou aplica\u00e7\u00e3o de modificador alcalino de \u00f3xido de c\u00e1lcio, bem como o <img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-7327 size-full\" src=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-v.jpg\" alt=\"Humic acid, fulvic acid, potassium humate prevents and controls heavy metal pollution.\" width=\"871\" height=\"1000\" srcset=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-v.jpg 871w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-v-196x225.jpg 196w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/blog-1-v-768x882.jpg 768w\" sizes=\"(max-width: 871px) 100vw, 871px\" \/>Aplica\u00e7\u00e3o de fertilizante composto de \u00e1cido h\u00famico alcalino, para melhorar o pH do solo. Forma sal de metais pesados de \u00e1cido h\u00famico est\u00e1vel, pol\u00edmero para reduzir o efeito da atividade biol\u00f3gica de metais pesados. Combinado com forte capacidade de resist\u00eancia a metais pesados, variedades de culturas. Tamb\u00e9m pode produzir a seguran\u00e7a alimentar livre de polui\u00e7\u00e3o no solo de certa polui\u00e7\u00e3o.<\/p>\r\n<h3><span style=\"font-size: 12pt;\">O \u00e1cido h\u00famico pode aumentar a atividade de metais pesados no solo<\/span><\/h3>\r\n<p>O \u00e1cido h\u00famico de baixa mol\u00e9cula pode aumentar a atividade de metais pesados do solo. O que \u00e9 prop\u00edcio para melhorar a taxa de fitorremedia\u00e7\u00e3o do solo contaminado por metais pesados. Devido \u00e0 exist\u00eancia de hidrog\u00eanio ativo em grupos \u00e1cidos na estrutura molecular do \u00e1cido h\u00famico. Esta mat\u00e9ria \u00e9 fracamente \u00e1cida e o pH do solo \u00e9 reduzido.  O que \u00e9 prop\u00edcio para melhorar a atividade de metais pesados do solo.<\/p>\r\n<p>Os elementos de hidrog\u00eanio em suas mol\u00e9culas podem trocar com \u00edons de metais pesados. Sob a condi\u00e7\u00e3o de potencial de REDOX do solo> 0,7V, mostrou efeito de redu\u00e7\u00e3o do doador de el\u00e9trons. Mudan\u00e7a de metais pesados do estado de oxida\u00e7\u00e3o para o estado reduzido. E reduziu \u00edons de metais pesados do estado de alta val\u00eancia para o estado de baixa val\u00eancia.  Redu\u00e7\u00e3o da precipita\u00e7\u00e3o em estado oxidado ou estado de sal de metais pesados de alta val\u00eancia.<\/p>\r\n<h3><span style=\"font-size: 12pt;\">O \u00e1cido h\u00famico tem a capacidade de complexar e quelar metais pesados.<\/span><\/h3>\r\n<p>Tem a capacidade de complexar e quelar metais pesados. A sequ\u00eancia de capacidade de quela\u00e7\u00e3o de diferentes tipos de \u00e1cidos h\u00famicos \u00e9 o \u00e1cido f\u00falvico.> \u00c1cido h\u00famico marr\u00e3o> \u00e1cido h\u00famico preto. Por exemplo, cada grama de \u00e1cido f\u00falvico pode ligar fe2o3750 &#8211; 890mg. E cada grama de \u00e1cido h\u00famico preto pode ligar fe2o3119 &#8211; 152 mg.<\/p>\r\n<p>No entanto, o fulfato de mol\u00e9cula pequena tem boa solubilidade e baixa estabilidade. O que aumenta a atividade biol\u00f3gica dos \u00edons de metais pesados e \u00e9 f\u00e1cil de ser absorvido por plantas ou microrganismos com a capacidade de super-enriquecimento de metais pesados. Portanto, pode acelerar a fitorremedia\u00e7\u00e3o e biorremedia\u00e7\u00e3o do solo contaminado por metais pesados e encurtar o tempo de remedia\u00e7\u00e3o.<\/p>\r\n<h3><span style=\"font-size: 12pt;\"><a href=\"https:\/\/www.humicchina.com\/nitro-humic-acid\" target=\"_blank\" rel=\"noopener noreferrer\">\u00c1cido h\u00famico<\/a> Pode aumentar a biodisponibilidade de metais pesados<\/span><\/h3>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12786\" src=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/Soluble-Humic-Acid-Potassium-humate.jpg\" alt=\"\" width=\"768\" height=\"444\" srcset=\"https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/Soluble-Humic-Acid-Potassium-humate.jpg 768w, https:\/\/www.humicchina.com\/wp-content\/uploads\/2019\/11\/Soluble-Humic-Acid-Potassium-humate-300x173.jpg 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\r\n<p>Pode aumentar a biodisponibilidade de metais pesados. E tem um efeito semelhante \u00e0 aplica\u00e7\u00e3o de EDTA e outros agentes quelantes no tratamento de solos fortemente polu\u00eddos por tecnologia de fitorremedia\u00e7\u00e3o com super-enriquecimento de metais pesados.<\/p>\r\n<p>Ao aumentar a concentra\u00e7\u00e3o de metais pesados na solu\u00e7\u00e3o do solo, a quantidade de metais pesados absorvidos pelas plantas e a capacidade de acumular metais pesados s\u00e3o grandemente aumentadas. Os metais pesados no solo s\u00e3o removidos do solo com a colheita de plantas e gradualmente retornam ao n\u00edvel normal. Assim, a polui\u00e7\u00e3o pode ser controlada.<\/p>\r\n<p>As plantas colhidas ricas em metais pesados podem ser usadas para extrair metais pesados ou como outros materiais n\u00e3o comest\u00edveis. Aplica\u00e7\u00e3o de fertilizantes \u00e1cidos h\u00famicos e melhoradores de solo relacionados (humato de pot\u00e1ssio, <a href=\"https:\/\/www.humicchina.com\/mineral-fulvic-acid\" target=\"_blank\" rel=\"noopener noreferrer\">\u00c1cido fulvico<\/a>Pode aumentar a taxa de remo\u00e7\u00e3o de metais pesados do solo a um pre\u00e7o muito menor do que os quelatores qu\u00edmicos, como o EDTA. Portanto, o \u00e1cido h\u00famico \u00e9 um bom e barato agente de melhoria do solo.<\/p>\r\n\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>Produtos relacionados: \u00c1cido h\u00famico, Humato de pot\u00e1ssio, \u00c1cido fulvico O solo \u00e9 um recurso natural indispens\u00e1vel e n\u00e3o renov\u00e1vel dos seres humanos.\u00c9 a base material da qual os seres humanos dependem para a sua sobreviv\u00eancia. O solo tem a capacidade de produ\u00e7\u00e3o para apoiar o crescimento das plantas. Ao mesmo tempo, ele tamb\u00e9m tem a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7324,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Humic acid prevents and controls heavy metal pollution. %%page%% %%sep%% JINGFENG","_yoast_wpseo_metadesc":"Humic acid, fulvic acid, potassium humate has the effect of complexing to fix heavy metals and reducing the activity of heavy metals.","_jf_seo_title_en":"","_jf_seo_desc_en":"","_jf_seo_title_ja":"","_jf_seo_desc_ja":"","_jf_seo_title_ko":"","_jf_seo_desc_ko":"","_jf_seo_title_es":"","_jf_seo_desc_es":"","_jf_seo_title_ar":"","_jf_seo_desc_ar":"","_jf_seo_title_vi":"","_jf_seo_desc_vi":"","_jf_seo_title_th":"","_jf_seo_desc_th":"","_jf_seo_title_tr":"","_jf_seo_desc_tr":"","_jf_seo_title_ru":"","_jf_seo_desc_ru":"","_jf_seo_title_pt":"","_jf_seo_desc_pt":"","_jf_seo_kw_ja":"","_jf_seo_kw_ko":"","_jf_seo_kw_es":"","_jf_seo_kw_ar":"","_jf_seo_kw_vi":"","_jf_seo_kw_th":"","_jf_seo_kw_tr":"","_jf_seo_kw_ru":"","_jf_seo_kw_pt":"","footnotes":""},"categories":[121],"tags":[153,358,163,141],"class_list":["post-8149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-humic-acid","tag-effect-of-humic-acid","tag-heavy-metals","tag-humic-acid-eliminate-heavy-metal-pollution","tag-potassium-humate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.3 (Yoast SEO v26.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Humic acid prevents and controls heavy metal pollution. &#8226; 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