环境科技
環境科技
배경과기
ENVIRONMENTAL SCIENCE AND TECHNOLOGY
2014年
4期
55-59
,共5页
环境应急监测%方法%测定%化学需氧量
環境應急鑑測%方法%測定%化學需氧量
배경응급감측%방법%측정%화학수양량
Environment emergency monitoring technology%Method%Determined%Chemical oxygen demand
随着社会和经济的快速发展，环境污染事故尤其是突发性水污染事故，不仅在发生次数上，而且在污染的危害程度上有增大趋势。应急监测是突发性环境污染事故处置与善后处理中的重要环节。用真空检测管-电子比色法测定水和废水中的化学需氧量，实验结果表明，该方法的准确度和精密度较高。方法最低检出限为10 mg/L,回收率为89.0%～105%，相对标准偏差为1.8%～12.3%，相对误差为-2.38%～+8.80%。用重铬酸盐法和真空检测管法测定实际样品，2种方法相对误差为-34.7%～+6.86%，能满足半定量检测要求,符合环境应急监测分析的要求。
隨著社會和經濟的快速髮展，環境汙染事故尤其是突髮性水汙染事故，不僅在髮生次數上，而且在汙染的危害程度上有增大趨勢。應急鑑測是突髮性環境汙染事故處置與善後處理中的重要環節。用真空檢測管-電子比色法測定水和廢水中的化學需氧量，實驗結果錶明，該方法的準確度和精密度較高。方法最低檢齣限為10 mg/L,迴收率為89.0%～105%，相對標準偏差為1.8%～12.3%，相對誤差為-2.38%～+8.80%。用重鉻痠鹽法和真空檢測管法測定實際樣品，2種方法相對誤差為-34.7%～+6.86%，能滿足半定量檢測要求,符閤環境應急鑑測分析的要求。
수착사회화경제적쾌속발전，배경오염사고우기시돌발성수오염사고，불부재발생차수상，이차재오염적위해정도상유증대추세。응급감측시돌발성배경오염사고처치여선후처리중적중요배절。용진공검측관-전자비색법측정수화폐수중적화학수양량，실험결과표명，해방법적준학도화정밀도교고。방법최저검출한위10 mg/L,회수솔위89.0%～105%，상대표준편차위1.8%～12.3%，상대오차위-2.38%～+8.80%。용중락산염법화진공검측관법측정실제양품，2충방법상대오차위-34.7%～+6.86%，능만족반정량검측요구,부합배경응급감측분석적요구。
With the rapid social and economic development, the environmental pollution accidents especially the emergent water pollution accidents have occurred more frequently and showed the tendency of being more dangerous. Emergency monitoring technology is the important link in disposition and aftercare of water pollution accident. Vacuum testing tube-electric colorimeter method determination of chemical oxygen demand was studied. The experiment results showed that the accuracy and precision were higher. The detective limitation was 10 mg/L,the recovery was 89.0% ~ 105%,the relative standard deviation was 1.8% ~ 12.3%,the relative error was -2.38% ~ +8.80%.When testing various actual samples by the two methods,the relative error was -34.7% ~ +6.86%,It was concluded that detection tube method could meet the needs of Semi-quantitative test, both meet the requirements for environmental emergency monitoring and analysis.
