GB/T 11902-1989 English PDF

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GB/T 11902-1989: Water quality. Determinaton of selenium. Diaminonaphthalene fluorometric method

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11902-1989	209	Add to Cart	3 days	Water quality. Determinaton of selenium. Diaminonaphthalene fluorometric method

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Basic data

Standard ID: GB/T 11902-1989 (GB/T11902-1989)
Description (Translated English): Water quality. Determinaton of selenium. Diaminonaphthalene fluorometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Z16
Classification of International Standard: 13.060.40
Word Count Estimation: 6,691
Date of Issue: 11/3/1989
Date of Implementation: 7/1/1990
Issuing agency(ies): State Bureau of Technical Supervision
Summary: This standard applies to all kinds of clean water, sewage and certain industrial waste (see Appendix A). Water is generally common anions and cations do not interfere with the determination of selenium. Copper, iron, molybdenum and other heavy metals and oxides on the determination of selenium have a lot of interference, can be used to eliminate EDTA and hydroxylamine hydrochloride. Under the conditions applied to the determination, when the Se content is 0. 05��g, 30��g of arsenic, cobalt, chromium; 5��g Cd; 20��g Ni; 27��g beryllium; 35��g copper; 40��g Mn; 50��g of lead, zinc; 100��g iron, vanadium, etc. do not interfere. The minimum detectable amount of 0. 005��g Law selenium, take 20mL water sample, the minimum detectable concentration of selenium was 0. 25��g/L.

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