偏远地区水质调研方法的模拟对比实验研究
发布时间：2018-08-03 07:02
【摘要】：针对偏远地区水环境评价时水样的采集、运输、保存等难以满足国标法中的要求,以CODCr、TP、氟化物等为研究指标,在实验室内对样品保存环境、运输条件、检测时间等各影响因素进行模拟评估试验,探索有效的技术方案。研究表明,在调p H2和4℃静置保存1 d的条件下,国标法和便携仪器法对CODCr的测试结果保持一致,若因条件限制无法4℃保存,可在调p H2和常温静置保存1 d,用便携仪器也基本满足测试要求。总磷测试需对水样现场加酸处理,常温保存运回检测地24h内完成测试,远距离运输保存时间不要超过3 d,运输过程中摇动以及短暂的升温对总磷含量影响不大。氟化物的测试可在采样后不调p H常温保存两周内完成测试。另外,研究发现,便携式仪器法测成分复杂的水样时局限性较大。
[Abstract]:The collection, transportation and preservation of water samples in remote area water environment assessment are difficult to meet the requirements of the national standard method. Taking CODCr-TPand fluoride as the research index, the sample preservation environment and transportation conditions are studied in the laboratory. The test time and other influencing factors were simulated and evaluated to explore the effective technical scheme. The results show that under the condition of adjusting pH 2 and storing at 4 鈩，
本文编号：2160951
[Abstract]:The collection, transportation and preservation of water samples in remote area water environment assessment are difficult to meet the requirements of the national standard method. Taking CODCr-TPand fluoride as the research index, the sample preservation environment and transportation conditions are studied in the laboratory. The test time and other influencing factors were simulated and evaluated to explore the effective technical scheme. The results show that under the condition of adjusting pH 2 and storing at 4 鈩，
本文编号：2160951
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