GB/T 11894-1989 English PDF

US$199.00 · In stock
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GB/T 11894-1989: Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11894-1989	199	Add to Cart	2 days	Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method	Obsolete

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Basic data

Standard ID: GB/T 11894-1989 (GB/T11894-1989)
Description (Translated English): Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Z16
Classification of International Standard: 13.060.01
Word Count Estimation: 5,563
Date of Issue: 11/3/1989
Date of Implementation: 7/1/1990
Regulation (derived from): Environmental Protection Ministry Bulletin 2012 No. 16
Issuing agency(ies): State Bureau of Technical Supervision
Summary: This Standard is applicable to the determination of surface water and groundwater. This Act may be measured total water nitrite nitrogen, nitrate nitrogen, inorganic salts, dissolved ammonia and most organic nitrogen compounds of nitrogen. The minimum detectable concentration of nitrogen was 0. 020mg/L, measured a maximum of 4mg/L. The standard molar extinction coefficient of 1. 47 �� 10 ^ 3L �� mol ^ - ^ 1 �� cm ^ - ^ 1. Assay interferences mainly iodide and bromide ions, more than 2. 2 times relative to the total nitrogen content of iodine ion, bromine ion relative to 3. 4 times the total nitrogen content of less interference. Impact on the determination of organic matter in the determination of when certain conditions stipulated in this Law can not be completely converted to nitrate.

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