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目的研究安徽省某镇回收蓄电池土法炼铅所造成的环境污染,为铅污染防治提供依据。方法用石墨炉原子吸收光谱法测定融铅炉污染区环境(空气、小麦、土壤)的铅含量,并与对照区进行比较。结果污染区空气样品的铅含量为0.028±0.265mg/m3,超过国家标准10倍;小麦样品铅含量为2.84±11.287mg/kg,超过国家标准7倍;土壤样品铅含量为0.0670±1.72%,超过国家标准2~3倍。对照组空气样品的的铅含量为0.0650±0.0527mg/m3;小麦样品的铅含量为0.335±0.114mg/kg;土壤样品的铅含量为0.067%±0.00505%。结论污染区空气、小麦和土壤中铅含量都显著高于对照组,土法炼铅严重污染了环境。
Objective To study the environmental pollution caused by lead-acid battery recycling in a town of Anhui Province and provide the basis for the prevention and control of lead pollution. Methods The content of Pb in the environment (air, wheat, soil) in the melting furnace was measured by graphite furnace atomic absorption spectrometry and compared with the control. Results The lead content of air samples in the contaminated area was 0.028 ± 0.265mg / m3, 10 times higher than the national standard. The lead content in wheat samples was 2.84 ± 11.287mg / kg, which was seven times higher than the national standard. The lead content in soil samples was 0.0670 ± 1.72% More than the national standard 2 to 3 times. In the control group, the lead content in air samples was 0.0650 ± 0.0527 mg / m3; the lead content in wheat samples was 0.335 ± 0.114 mg / kg; the lead content in soil samples was 0.067% ± 0.00505%. Conclusion The levels of Pb in air, wheat and soil in the contaminated area were significantly higher than those in the control group. Lead smelting by the indigenous method seriously polluted the environment.