YS/T 536.4-2009Methods for chemical analysis of bismuth. Determination of silver content. Flame atomic absorption spectorphotometric method and electrothermal atomic absorption spectromeric method (English PDF)

Foreword

YS/T 536-2009 "Method for chemical analysis of bismuth" is divided into 13 parts.

--- YS /536.1 Methods for chemical analysis of bismuth - Determination of copper content - Bis - acetaldehyde T oxalyl Spectrophotometric Method;

--- YS/T 536.2 Methods for chemical analysis of bismuth - Determination of iron content by electrothermal atomic absorption spectrometry;

--- YS/T 536.3 Methods for chemical analysis of bismuth - Determination of antimony content - Malachite green spectrophotometry;

--- YS/T 536.4 Methods for chemical analysis of bismuth - Determination of silver content - Flame atomic absorption spectrometry and electrothermal atomic absorption spectrometry;

--- YS/T 536.5 Methods for chemical analysis of bismuth - Determination of solid-liquid extraction of zinc content - Flame atomic absorption spectrometry;

--- YS/T 536.6 Methods for chemical analysis of bismuth - Determination of lead content by electrothermal atomic absorption spectrometry;

--- YS/T 536.7 Methods for chemical analysis of bismuth arsenic content - Atomic fluorescence spectrometry;

--- YS/T 536.8 Methods for chemical analysis of bismuth chlorine measured amount of mercury thiocyanate spectrophotometry;

--- YS/T 536.9 Methods for chemical analysis of bismuth - Determination of tellurium content of arsenic co-precipitation - oscillopolarographic method;

--- YS/T 536.10 Methods for chemical analysis of bismuth - Determination of tin content of beryllium coprecipitation - spectrophotometry;

--- YS/T 536.11 Methods for chemical analysis of bismuth mercury content - Atomic fluorescence spectrometry;

--- Determination of YS/T 536.12 Methods for chemical analysis of nickel content of bismuth electrothermal atomic absorption spectrometry;

--- YS/T 536.13 Methods for chemical analysis of bismuth - Determination of cadmium content by electrothermal atomic absorption spectrometry.

This is Part 4.

The partial replacement of YS/T 536.4-2006 (formerly GB/T 8220.4-1998) "Methods for chemical analysis of bismuth by flame atomic absorption spectroscopy Determination of the amount of silver "and YS/T 536.13-2006 (formerly GB/T 8220.13-1998)" Methods for chemical analysis of bismuth electrothermal atomic absorption spectrometry Determination of silver and cadmium content "(measuring portion silver content). Compared with YS/T 536.4-2006 and YS/T 536.13-2006, this part the following changes.

--- Complements the precision, quality assurance and control provisions;

--- Text format has been modified.

The non-ferrous metal part by the National Standardization Technical Committee and centralized.

This section is Zhuzhou Smelter Group Co., Ltd. is responsible for drafting.

1 Method, flame atomic absorption spectrometry

1 Scope

This section provides Determination of silver content of bismuth.

This section applies to the determination of bismuth silver content. Measurement range (mass fraction). > 0.002% to 0.030%.

2 Method summary

Sample with nitric acid dissolved in hydrochloric acid medium, air - acetylene flame atomic absorption spectrometer at a wavelength of 328.1nm measured silver Absorbance. The standard curve method to calculate the content of silver.

3 Reagents

4 Instrument

Atomic absorption spectrometer, with a silver hollow-cathode lamp.

Under optimum working conditions for those who can meet the following indicators can be used.

--- Characteristic concentration. In line with the measurement of a sample solution matrix solution, features silver concentration should be less than 0.027µg/mL.

--- Precision. standard solution measured absorbance of the highest concentration of 10 times, the standard deviation should not exceed the average absorbance of 1.0%;