CAJ | 학술논문

基于阳极溶出伏安法原理的便携式重金属检测仪是重金属环境污染事故现场监测的重要手段，可在事故现场对Zn，Cd，Pb，Cu，Hg，As等进行快速定量分析测定。对便携式重金属检测仪现场快速分析方法进行了优化研究，并与实验室分析方法进行了系统比对。优化方法拓宽了定量分析范围，使Cd，Pb，Cu的定量范围调宽到校准点浓度的10％～10倍（即0．02～2．00mg／L）；Zn的定量范围调宽到校准点浓度的10％～250％（即0．02～0．50mg／L）；Hg的定量范围为达到校准点浓度的20％～2倍（即0．005-0．500mg／L），满足μg／L-mg／L级不同浓度的分析。优化后方法性能数据表明，zn，Cd，Pb，Cu，Hg，As的检出限在6×10^-4～4×10^-2mg／L，RSD小于6％，RE在-18％～20％，基体加标回收率为72％～120％。比对数据显示与实验室标准方法相比，该方法的检出限，与ICP—AES相当，优于AAS火焰法；RSD与其两者相当，准确度略低于此两者，鉴于该方法测定时间短，仪器可便携，更适用于污染事故重金属的现场测定。
기우양겁용출복안법원리적편휴식중금속검측의시중금속배경오염사고현장감측적중요수단，가재사고현장대Zn，Cd，Pb，Cu，Hg，As등진행쾌속정량분석측정。대편휴식중금속검측의현장쾌속분석방법진행료우화연구，병여실험실분석방법진행료계통비대。우화방법탁관료정량분석범위，사Cd，Pb，Cu적정량범위조관도교준점농도적10％～10배（즉0．02～2．00mg／L）；Zn적정량범위조관도교준점농도적10％～250％（즉0．02～0．50mg／L）；Hg적정량범위위체도교준점농도적20％～2배（즉0．005-0．500mg／L），만족μg／L-mg／L급불동농도적분석。우화후방법성능수거표명，zn，Cd，Pb，Cu，Hg，As적검출한재6×10^-4～4×10^-2mg／L，RSD소우6％，RE재-18％～20％，기체가표회수솔위72％～120％。비대수거현시여실험실표준방법상비，해방법적검출한，여ICP—AES상당，우우AAS화염법；RSD여기량자상당，준학도략저우차량자，감우해방법측정시간단，의기가편휴，경괄용우오염사고중금속적현장측정。
Portable heavy metal detector basing on Anodic Stripping Voltammetry is one of the convenient means applicable to heavy metals contamination measurement, which can provide immediate quantitative analysis results for Zn, Cd, Pb, Cu, Hg, As and such. In this paper, comparison experiments between standard laboratory analysis methods and rapid field metal detection have been constucted and conducted to improve the accuracy of field metal detection method. The refined methods broadened the detection range, the Cd, Pb, Cu quantitative range extended to 10% to 10 times of the calibration point concentration （0.02 mg/L-2.00 mg/L） ; Zn quantitative range to 10%-250% of the calibration point concentration （0.02 mg/L-0.50 mg/L） ; Hg quantitative range to 20% to 2 times of the calibration point concentration （0. 005 mg/L-0. 500 mg/L）, in order to meet the detection limit for various level of sample, concentrations range from μg/L to mg/L. Performance data of optimized method show that the detection limit of Zn, Cd, Pb, Cu, Hg, As is about 6×10 4 -4× 10-3 mg/L, RSD is less than 6%, RE is about- 18%-20%, and the substrate standard addition recovery is within 72%-120%. Comparing with results from standard laboratory analysis methods shows that improved field detection method share a similar detection limit with ICP AES, while has relatively wider detection range than flame AAS method All methods have close RSD value, while the field detection provide slightly less accurate results than the others. All in all, in lights of the its rapid de- tection and portability, the detector is suitable for field heavy metals contamination detection, particularly, during some pollution accidents.