The rates of inadequacy in on-site evaluations conducted on 101 environmental test laboratories of the odor field, 15 laboratories at specialized institutions for persistent organic pollutant analysis, and 24 laboratories at environmental hazardous factor inspection agencies were analyzed. In case of the complex odor field, issues were raised regarding the management of odor analysts and odor judgment personnel, qualitative maintenance of odorless air generation devices, and appropriateness of the source odor identification process. In case of the persistent organic pollutants field, accuracy is required in the management of glassware and analytical equipment used during the analysis process as well as in the calculation of test results. In case of the environmentally hazardous factor field, improvements are needed regarding the selection of sampling points, the appropriateness of sample volume, result display, gas safety measures, and sample collection records.
Hwang et al. (Mon,) studied this question.