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Automated field portable trace metal analysis

机译:自动化的现场便携式痕量金属分析

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摘要

Metal contamination arises from many sources and does not biodegrade in the environment. Prevention of soil and sediment contamination can only be accomplished by effective real or near-real-time monitoring of effluents, process streams, and runoff. Field measurement of metals is difficult due to the size and complexity of standard analytical instrumentation. Current laboratory methods usually employ either graphite furnace atmoic absorption spectroscopy or inductively coupled plasma mass spectroscopy. Although these instruments are capable of measuring metals at nanomolar concentrations, they are not well suited for continuous automated field meonitoring of effluent and process streams. they are expensive, sensitive to matrix affects, and require experienced operators as well as significant infrastructure support for field use.
机译:金属污染来自多种来源,并且不会在环境中生物降解。防止土壤和沉积物污染只能通过对流出物,工艺物流和径流进行有效的实时或近实时监测来实现。由于标准分析仪器的尺寸和复杂性,金属的现场测量非常困难。当前的实验室方法通常采用石墨炉原子吸收光谱法或电感耦合等离子体质谱法。尽管这些仪器能够测量纳摩尔浓度的金属,但它们并不十分适合于废水和工艺流的连续自动现场监测。它们价格昂贵,对矩阵影响敏感,并且需要经验丰富的操作员以及大量的基础设施支持以供现场使用。

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