[01] Chunxia Gong, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China; School of Chemistry and Chemical Engineering, Southeast University, Nanjing, China. [02] Yanjuan Chen, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China. [03] Xiaofei Zhang, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China. [04] Qihui Hu, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China. [05] Yu Cheng, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China. [06] Mingxue Fang, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China. [07] Duyou Wang, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China. [08] Qun Chen, Zhejiang Tianneng battery (Jiangsu) Co., Ltd., Shuyang Jiangsu, China.

In recent years, lead poisoning events have occurred frequently. Lead metal impacts body's nervous and blood system significant. the people should appear arrhythmia, renal failure, convulsions, coma and even death if lead levels in the blood of pepole were more than 1000 g/L. Therefore, it is very important for the survival of human to research the properties of heavy metal lead. In this paper dissolution performance of scrap lead paste with different sodium citrate concentrations has been researched. The photos show the color of solution turning to black from gray with 8.3%-30% sodium citrate solution. pH values of filtrate were all higher than seven. 0.1~ 0.3g sodium citrates were consumed by per gram scrap lead paste. The results show not only the concentrations of Pb2+ in filter liquor but also the dissolution rates of scrap lead paste increase with the increase of concentration of the sodium citrate.

Dissolution Performance, Scrap Lead Paste, pH, Concentrations, Sodium Citrate

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