Abstract
Technical examinations and quality assessments regarding analysis of water quality, soil, industrial waste, etc. have been carried out over the past 35 years at Local Independent Administrative Agency Hokkaido Research Organization Industrial Research Institute. A common sample for environmental measurement certification business operators in Hokkaido was also prepared and distributed for the purpose of inter-laboratory comparison. The interlaboratory comparison not only performs the necessary statistical work, but also summarizes the results of analysis and takes questions regarding analyses of environmental measurement certification business operators. The organization has not only answered with the introduction of written reports, etc. but has also conducted examinations when needed. Many questions are raised these days from environmental measurement certification business operators, especially concerning analysis pretreatments. Examination of solid-liquid separation, pretreatment and various instrumental analysis measurements are all introduced, with a focus on the interlaboratory comparison for soil/industrial waste analysis accompanied by the leaching test in the past several years.
