1.1本试验方法描述了筛选已知含有卤化挥发性有机化合物（HVOC）、三氯乙烯（TCE）的介质的程序。程序A用于筛选已知含有三氯乙烯的土壤，程序B用于筛选已知含有三氯乙烯的水。 1.1.1程序A和B均涉及使用加热二极管传感器装置测量样品上方顶空中的TCE浓度。通过该测量，可以确定样品中TCE的估计浓度。 未测量样品中剩余的任何TCE。样本中存在的任何其他HVOC将报告为TCE。 1.2程序A也可用于筛选怀疑含有HVOC污染的土壤上方的顶空，以指示土壤中是否存在HVOC污染。程序B也可用于筛选怀疑含有HVOC污染的水上方的顶空，以指示水中是否存在HVOC污染。对于这两种程序，本试验方法均未检测到土壤或水中残留的任何HVOC污染。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任制定适当的安全和健康实践，并在使用前确定监管限制的应用。 注1 二极管传感器被加热到大约600到1000 C之间的温度（请参阅），因此可能成为点火源。

1.1 This test method describes procedures for screening media known to contain the halogenated volatile organic compound (HVOC), trichloroethylene (TCE). Procedure A is to be used for screening soil known to contain TCE and Procedure B is to be used for screening water known to contain TCE. 1.1.1 Both Procedures A and B involve measuring the TCE concentration in the headspace above a sample using a heated diode sensor device. From this measurement, an estimated concentration of TCE in the sample can be determined. Any TCE remaining in the sample is not measured. Any other HVOC present in the sample will be reported as TCE. 1.2 Procedure A can also be used for screening the headspace above a soil suspected of containing HVOC contamination to indicate the presence or absence of HVOC contamination in the soil. Procedure B can also be used for screening the headspace above a water suspected of containing HVOC contamination to indicate the presence or absence of HVOC contamination in the water. For both procedures, any HVOC contamination remaining in the soil or water is not detected by this test method. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the application of regulatory limitations prior to use. Note 1 The diode sensor is heated to temperatures ranging between approximately 600 and 1000 C (see ) and as a result could be a source of ignition.