CAJ | 학술논문

2012年5月在黄石市采集了17个大气降尘样品，利用修正的BCR连续提取技术，借助火焰-原子吸收光谱仪分析了7种重金属元素各形态的含量。结果显示，Cu、Pb、Cd、Zn、Mn、Fe、Co总量的平均值分别为1674．19 mg/kg、949．30 mg/kg、41．35 mg/kg、2122．53 mg/kg、986．78 mg/kg、28028．89 mg/kg 和465．95 mg/kg，降尘重金属污染严重，其中以Cu、Pb、Zn和Cd最为突出。重金属形态特征及生物有效性与环境风险分析结果表明，降尘中Fe和Co主要以残渣态形式存在，Cd主要以弱酸态形式存在，Cu、Pb、Zn和Mn主要以弱酸态和可还原态形式存在，其中Cd、Pb、Zn、Cu、Mn、Co 有50％以上可能发生迁移，易被生物利用，对环境有较高风险。
2012년5월재황석시채집료17개대기강진양품，이용수정적BCR련속제취기술，차조화염-원자흡수광보의분석료7충중금속원소각형태적함량。결과현시，Cu、Pb、Cd、Zn、Mn、Fe、Co총량적평균치분별위1674．19 mg/kg、949．30 mg/kg、41．35 mg/kg、2122．53 mg/kg、986．78 mg/kg、28028．89 mg/kg 화465．95 mg/kg，강진중금속오염엄중，기중이Cu、Pb、Zn화Cd최위돌출。중금속형태특정급생물유효성여배경풍험분석결과표명，강진중Fe화Co주요이잔사태형식존재，Cd주요이약산태형식존재，Cu、Pb、Zn화Mn주요이약산태화가환원태형식존재，기중Cd、Pb、Zn、Cu、Mn、Co 유50％이상가능발생천이，역피생물이용，대배경유교고풍험。
Seventeen atmospheric dustfall samples were collected from Huangshi during May 2012.The speciation characteristics of heavy metals(Cu、Pb、Cd、Zn、Mn、Fe、Co)in atmospheric dustfall were extracted by the modified BCR sequential extraction procedure .The concentrations of heavy metals have been analyzed with flame atomic ab-sorption spectrometry.The results showed that mean concentrations of Cu、Pb、Cd、Zn、Mn、Fe、Co in atmospheric dustfall were 1 674.19 mg/kg,949.30 mg/kg,41.35 mg/kg,2 122.53 mg/kg,986.78 mg/kg,28 028.89 mg/kg, 465.95 mg/kg,respectively.The heavy metal pollution of dustfall in Huangshi City was serious ,especially Cu、Pb、Zn and Cd.The results of speciation characteristics analysis indicated that Fe and Co were dominated by residue fraction,Cd mainly existed in acetic acid extractable part,Cu、Pb、Zn and Mn were rich in acetic acid extractable part and reducible part.There were stronger transformation(>50%)and higher environmental risk of Cd、Pb、Zn、Cu and Mn.