ISO 11262:2003 土壤质量-氰化物测定

标准编号：ISO 11262:2003

中文名称：土壤质量-氰化物测定

英文名称：Soil quality — Determination of cyanide

发布日期：2003-09

标准范围

ISO 11262:2003适用于收到的土壤样品，并规定了两种测定易释放和复杂氰化物的量化方法。在测量复杂氰化物之前，并不总是需要测定容易释放的氰化物。在这种情况下，省略蒸馏过程的第一部分，以便仅测定总氰化物。这些方法适用于总氰化物含量在0.5 mg/kg至10000 mg/kg之间的土壤。从相关吸收溶液中提取的等份氰化物的方法和相应范围为光度法，适用于原始现场潮湿样品中0.5 mg/kg至50 mg/kg的氰化物含量，以及使用指示剂的滴定法，适用于原始现场超过50 mg/kg的氰化物含量-潮湿的样品。

ISO 11262:2003 is applicable to as-received soil samples, and specifies two quantification methods for the determination of easily released and complex cyanides. It is not always necessary to determine easily released cyanide prior to the measurement of complex cyanide. In this instance, the first part of the distillation process is omitted so that only the total cyanide is determined. The methods are applicable to soil containing between 0,5 mg/kg and 10 000 mg/kg of total cyanide. The methods and corresponding ranges of cyanide in the aliquot taken from the relevant absorption solution are a photometric method, applicable for cyanide contents of 0,5 mg/kg to 50 mg/kg in the original field-moist sample, and a titrimetric method using an indicator, applicable for cyanide contents of above 50 mg/kg in the original field-moist sample.

标准预览图