標準號：DIN 19738-2004
中文標準名稱：土壤質量.污染的土壤材料中有機和無機污染物的可吸收性
英文標準名稱：Soil quality - Absorption availability of organic and inorganic pollutants from contaminated soil material
標準類型：Z18
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z18
國際標準分類號：13.080.10
引用標準：DIN 4021;DIN 32645;DIN 38406-29;DIN 38414-20;DIN 38414-24;DIN EN ISO 5667-3;DIN EN ISO 11885;DIN EN ISO/IEC 17025;DIN ISO 10381-1;DIN ISO 10381-2;DIN ISO 10382;DIN ISO 11047;DIN ISO 13877;DIN ISO 11464;DIN ISO 11466;E DIN ISO 14507-1996;VDI Guideline 3499
適用范圍：This standard specifies a method of testing the bioaccessibility of substances in contaminated soil materialand materials that may be applied to the soil or introduced into it (see article 6 of the Bundesbodenschutz-gesetz. It permits only those substances to be examined that have a sufficiently low vapour pressure and arenot subject to appreciable loss under the test conditions set out below, Furthermore, suitable analyticalmethods may need to be used to detect the substances or elements inthe complex digestive solutions.In the system described here, the mobilization of organic and inorganic contaminants from contaminatedmaterial with the aid of synthetic digestive juices (gastric juice and intestinal juice and, in some cases, alsosaliva) is examined under standardized, physiologically realistic conditions. With regard to their mainconstituents, the composition of these solutions is very similar to the average composition of human digestivejuices when their secretion is stimulated during the ingestion of food, The samples are treated with gastricjuice for two hours, which is similar to the average time food is retained in the stomach. Following that, thesamples are treated with intestinal juice for six hours, which represents the maximum time for which foodcomponents are retained in the small intestine as a whole.