CAJ | 학술논문

对3种便携式分光光度计快速测定水中铅的方法进行了优化和比对研究.通过研究各仪器性能指标以及测定实际水质样品，对不同便携式分光光度计的优势进行了比较，为突发性环境污染事故应急监测选择合适的监测仪器提供了技术参考.结果表明：JH916检测仪快速测定水中铅的方法检出限（0.003 mg/L）低于ZZW-Ⅱ测试仪和PORS-15V光谱仪的方法检出限（分别为0.2 mg/L和0.4 mg/L），在突发性环境污染事故应急监测中，JH916检测仪具有相对较高的灵敏度. JH916检测仪和PORS-15V光谱仪快速测定水中铅的方法精密度相近，其测试结果相对标准偏差（RSD）均未超过7.5%，ZZW-Ⅱ测试仪的方法精密度稍差，其相对标准偏差（RSD）最大值为20%.3种便携式分光光度计测定实际样品时，加标回收率分别为84%~115%（ZZW-Ⅱ测试仪）、81%~118%（PORS-15V光谱仪）、90%~117%（JH916检测仪），表明3种便携式分光光度计均有相对较好的准确度.3种便携式分光光度计与实验室分析方法相比，测试结果相对偏差较大，最大相对偏差分别为22%（ZZW-Ⅱ测试仪）、11%（PORS-15V光谱仪）、-26%（JH916检测仪）.
대3충편휴식분광광도계쾌속측정수중연적방법진행료우화화비대연구.통과연구각의기성능지표이급측정실제수질양품，대불동편휴식분광광도계적우세진행료비교，위돌발성배경오염사고응급감측선택합괄적감측의기제공료기술삼고.결과표명：JH916검측의쾌속측정수중연적방법검출한（0.003 mg/L）저우ZZW-Ⅱ측시의화PORS-15V광보의적방법검출한（분별위0.2 mg/L화0.4 mg/L），재돌발성배경오염사고응급감측중，JH916검측의구유상대교고적령민도. JH916검측의화PORS-15V광보의쾌속측정수중연적방법정밀도상근，기측시결과상대표준편차（RSD）균미초과7.5%，ZZW-Ⅱ측시의적방법정밀도초차，기상대표준편차（RSD）최대치위20%.3충편휴식분광광도계측정실제양품시，가표회수솔분별위84%~115%（ZZW-Ⅱ측시의）、81%~118%（PORS-15V광보의）、90%~117%（JH916검측의），표명3충편휴식분광광도계균유상대교호적준학도.3충편휴식분광광도계여실험실분석방법상비，측시결과상대편차교대，최대상대편차분별위22%（ZZW-Ⅱ측시의）、11%（PORS-15V광보의）、-26%（JH916검측의）.
Methods of rapid determination of lead in water samples by using three kinds of portable spectrophotometer were optimized and the contrast research on these methods was carried out in this paper. By testing the performance indexes of different instrumental methods and determinating the lead in actual water samples ,the advantages of different portable spectrophotometers were researched comparatively. The research result will be able to provide a reference for choosing the suitable monitoring instruments in sudden environmental pollution accident. The experimental results showed the detection limit of JH916 portable spectrophotometer(0.003 mg/L)was lower than that of ZZW-Ⅱportable spectrophotometer(0.2 mg/L)and PORS-15V portable spectrophotometer(0.4 mg/L), which meant that JH916 portable spectrophotometer had higher sensitivity of monitoring in sudden environmental pollution accident than the other two. The method precision of PORS-15V portable spectrophotometer and JH916 portable spectrophotometer was similar and the RSDs(relative standard deviation)were all below 7.5%(n=6). The method precision of ZZW-Ⅱportable spectrophotometer was not better as the other two spectrophotometers,the maximal RSD was 20%. The recoveries were 84%~115%(ZZW-Ⅱportable spectrophotometer),81%~118%(PORS-15V portable spectrophotometer),90%~117%(JH916 portable spectrophotometer)for the actual water samples. There was significant difference between the accuracy of standard method and the accuracy of the three kinds of portable spectrophotometer,the maximal relative deviations were 22%(ZZW-Ⅱportable spectrophotometer),11%(PORS-15V portable spectrophotometer),-26%(JH916 portable spectrophotometer).