Abstract Experimental studies have been carried out to find the bioremediation activity of bacteria with molybdenum and zinc ions separately on the toxic insecticide, chlorpyrifos. Two bacterial strains, ZS20 (Enterobacter sp. strain TSNG) and E57 (Pseudomonas sp. strain GRTM) and three inorganic salts: ammonium-molybdate, sodium-molybdate, and zinc-nitrate, have been used for the degradation of toxic insecticide, chlorpyrifos. The metabolic products obtained are chelating organic acids, such as maleamic acid, ascorbic acid, salicylic acid, and other different derivatives of soluble-phosphate and phosphatase enzymes. They help for the better growth of plants. Ammonium-molybdate along with ZS20 strain is more active for the production of metabolic products and the growth of plants than the other combination. The liquid chromatography and mass spectrometry data of ZS20 and ammonium-molybdate salt portray complete degradation of chlorpyrifos into nontoxic valuable products. Hence, this combination can be used as good bioremediater as well as good biofertilizer. Results have been tabulated, shown graphically and discussed.

中文翻译：

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钼锌盐催化细菌生物修复毒死蜱生成有价值有机产物的研究

摘要 通过实验研究了钼离子和锌离子对细菌分别对毒杀虫剂毒死蜱的生物修复活性。两种细菌菌株 ZS20（肠杆菌属菌株 TSNG）和 E57（假单胞菌属菌株 GRTM）和三种无机盐：钼酸铵、钼酸钠和硝酸锌，已用于降解有毒杀虫剂毒死蜱. 获得的代谢产物是螯合有机酸，如马来酸、抗坏血酸、水杨酸和其他不同的可溶性磷酸盐和磷酸酶衍生物。它们有助于植物更好地生长。与其他组合相比，钼酸铵与 ZS20 菌株对代谢产物的产生和植物的生长更活跃。ZS20 和钼酸铵盐的液相色谱和质谱数据表明毒死蜱完全降解为无毒有价值的产品。因此，这种组合可以用作良好的生物修复剂以及良好的生物肥料。结果已制成表格、图形显示和讨论。