GB/T 7494-1987 English Version, GB/T 7494-1987 quality - Determination of anionic surfactants - Methylene blue spectrophotometric method (English Version)

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GB/T 7494-1987 quality - Determination of anionic surfactants - Methylene blue spectrophotometric method (English Version)
Standard No.:	GB/T 7494-1987	Status:	valid remind me the status change Email:
Language:	English	File Format:	PDF
Word Count:	3000 words	Price(USD):	214.0 remind me the price change Email:
Implemented on:	1987-8-1	Delivery:	via email in 1~3 business day

Standard No.:	GB/T 7494-1987
English Name:	quality - Determination of anionic surfactants - Methylene blue spectrophotometric method
Chinese Name:	水质阴离子表面活性剂的测定亚甲蓝分光光度法
Chinese Classification:	Z16 Analysis methods for toxic substances in water
Professional Classification:	GB National Standard
Issued by:	AQSIQ
Issued on:	1987-3-6
Implemented on:	1987-8-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	214.0
Delivery:	via email in 1~3 business day

GB/T 7494-1987 is referred in:

* GB/T 18920-2002 The reuse of urban recycling water - Water quality standard for urban miscellaneous water consumption
* GB/T 18920-2002 The reuse of urban recycling water - Water quality standard for urban miscellaneous water consumption
* GB 5084-2005 Standards for irrigation water quality
* CJ 343-2010 Wastewater quality standards for discharge to municipal sewers
*GB/T 19923-2005 The reuse of urban recycling water--Water quality standard for industrial uses
*GB/T 31962-2015 Wastewater quality standards for discharge to municipal sewers

Standard

GB/T 7494-1987 quality - Determination of anionic surfactants - Methylene blue spectrophotometric method (English Version)
Standard No.	GB/T 7494-1987
Status	valid
Language	English
File Format	PDF
Word Count	3000 words
Price(USD)	214.0
Implemented on	1987-8-1
Delivery	via email in 1~3 business day

Detail of GB/T 7494-1987

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Introduction of GB/T 7494-1987

本方法适用于测定饮用水、地面水，生活污水及工业废水中的低浓度亚甲蓝活性物质(MBAS)，亦即阴离子表面活性物质。在实验条件下，主要被测物是LAS、烷基磺酸钠和脂肪醇硫酸钠，但可能存在一些正的和负的干扰(见第8章)。当采用lOmm光程的比色皿，试份体积为100m1时，本方法的最低检出浓度为0.05mg/L LAS，检测上限为2.0m9/L LAS。

Contents of GB/T 7494-1987

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