论文部分内容阅读
目的通过分析电子线路板粉末中主要重金属成分的含量及其浸出液中重金属含量,分析其中可溶性重金属盐类所占的比重,同时通过动物实验初步探讨该废弃物溶出液饲养斑马鱼后镍镉在斑马鱼体内变化的情况。方法通过原子吸收分光光度法分析并对比电子线路板粉末和浸出液中铜、铅、锌、镉、镍、铬、铁、锰的含量,初步分析该粉末中重金属的溶出情况及对水体可能的影响。通过对不同剂量浸出液饲养的斑马鱼体内镍铬含量的分析,探讨其在斑马鱼体内变化的情况。结果电子线路板粉末中含量最高的前3位金属分别是铜、铅和铁,分别达64.1、55.6和25.8 mg/kg;金属铬未被检出。浸出液中含量最高的前3位金属分别是铜、锰和镉,其含量分别达1.440、0.322和0.088 mg/L。在实验室饲养斑马鱼中,虽然对照组、低剂量组和中剂量组检测结果有一些不同,但其差异无统计学意义。结论电子线路板拆解废弃物中铜、锰、镉溶出量较高,应在现场监测中重点关注。用一定浓度的浸出液饲养斑马鱼体,其体内的镍铬水平基本无变化。
OBJECTIVE: To analyze the content of major heavy metals in electronic circuit board powder and heavy metals in leachate, and to analyze the proportion of soluble heavy metal salts in animal leukocytes. At the same time, Changes in the body of the fish. Methods The content of copper, lead, zinc, cadmium, nickel, chromium, iron and manganese in electronic powder and leachate were analyzed by atomic absorption spectrophotometry. The dissolution of heavy metals in the powder and the possible influence on the water were preliminarily analyzed . Through the analysis of the content of Ni-Cr in zebrafish fed by leachate with different dosages, the change of its content in zebrafish was discussed. Results The top three metals with the highest levels of electronic board powder were copper, lead and iron at 64.1, 55.6 and 25.8 mg / kg, respectively; metallic chromium was not detected. The first three metals with the highest levels in leachate were copper, manganese and cadmium, with levels of 1.440, 0.322 and 0.088 mg / L, respectively. In the laboratory feeding zebrafish, although the control group, low dose group and middle dose group test results are some differences, but the difference was not statistically significant. Conclusion The elution amount of copper, manganese and cadmium in the disassembled waste of electronic circuit boards is high, and should be the focus of on-site monitoring. With a certain concentration of leachate feeding zebrafish body, the body’s nickel-chromium level basically unchanged.