BS ISO 6851-2002 摄影.冲洗废液.氨态氮总含量的测定(基耶达微扩散法)

标准号：BS ISO 6851-2002
中文标准名称：摄影.冲洗废液.氨态氮总含量的测定(基耶达微扩散法)
英文标准名称：Photography - Processing waste - Determination of total amino nitrogen (microdiffusion Kjeldahl method)
标准类型：G84
发布日期：2002/1/18 12:00:00
实施日期：2002/1/18 12:00:00
中国标准分类号：G84
国际标准分类号：13.030.30;37.040.30
适用范围：This International Standard specifies a method for the determination of the total organic nitrogen, as well as any ammoniacal nitrogen, present in photographic processing wastes by the Kjeldahl method. Total Kjeldahl nitrogen can be determined in photographic processing wastes in the range of 10 mg/l to 200 mg/l as ammonia, or in the range of 8 mg/l to 160 mg/l in terms of nitrogen. If ammoniacal nitrogen (see ISO 6853) is determined separately and subtracted, the concentration of organic amino nitrogen can be established.