GB/T 11446.5-2013
Test method for measuring trace metals in electronic grade water by atomic absorption spectrophotometry (English Version)

Standard No.: GB/T 11446.5-2013
Language: Chinese, Available in English version
Release Date: 2013
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 11446.5-2013
Replace: GB/T 11446.5-1997

Scope: This part of GB/T 11446 specifies the test method for the determination of trace metals copper, zinc, nickel, iron, lead, sodium and potassium in electronic grade water by flameless (or flame) atomic absorption spectrophotometer. It can also be measured using other instruments with comparable sensitivity, such as inductively coupled plasma/mass spectrometer (or inductively coupled plasma optical emission spectrometer). Flameless atomic absorption spectrophotometry is suitable for the determination of trace metals in EW-I~EW-III electronic grade water. The detection limit (mass fraction) of the method should be below 1×10^-9. Flame atomic absorption spectrophotometry is suitable for the determination of trace metals in EW-IV electronic grade water.

GB/T 11446.5-2013 Referenced Document

2013 GB/T 11446.5-2013 Test method for measuring trace metals in electronic grade water by atomic absorption spectrophotometry
1997 GB/T 11446.5-1997 Test method for measuring trace metals in electronic grade water by atomic absorption spectrophotometry