GB/T 17137-1997
Soil quality--Determination of total chromium--Flame atomic absorption spectrophotometry (English Version)

Standard No.

GB/T 17137-1997

Language

Chinese, Available in English version

Release Date

1997

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Withdraw 2009-11

Latest

GB/T 17137-1997

Replace By

HJ 491-2009

Scope

This standard specifies the flame atomic absorption spectrophotometric method for the determination of total chromium in soil. The detection limit of this standard (calculated on the basis of weighing 0.5g sample to digest and set the volume to 50m1) is 5mg/kg. Interfering chromium is an element that is easy to form high-temperature-resistant oxides. Its atomization efficiency is greatly affected by the flame state and the height of the burner. It is necessary to use a rich combustibility (reduction) flame, and the best observation height is 10mm. Adding ammonium chloride can suppress the interference of coexisting ions such as iron, cobalt, nickel, vanadium, aluminum, magnesium, and lead.

GB/T 17137-1997 history

• 1997 GB/T 17137-1997 Soil quality--Determination of total chromium--Flame atomic absorption spectrophotometry

GB/T 17137-1997 Soil quality--Determination of total chromium--Flame atomic absorption spectrophotometry was changed to HJ 491-2009 Soil quality.Determination of total chromium.Flame atomic absorption spectrometry.