YS/T 536.13-2009Methods for chemical analysis of bismuth. Determination of cadmium content. Electrothermal atomic absorption spectrometric 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 13.

The partial replacement of YS/T 536.13-2006 (formerly GB/T 8220.13-1998) "Methods for chemical analysis of bismuth electrothermal atomic spectrometry Determination of silver and cadmium content. " Compared with YS/T 536.13-2006, this section has the following changes.

--- Text format has been modified;

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

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.

This section drafted by the Zhuzhou Smelter Group Co., Ltd.

This section from Guangzhou Nonferrous Metal Research Institute, Liaoning SAIEC IQ participate in the drafting.

1 Scope

This section provides the determination of bismuth in the amount of cadmium.

This section applies to the determination of bismuth in the amount of cadmium. Measurement range (mass fraction). 0.00005% ~ 0.0002%.

2 Method summary

Sample decomposition with nitric acid, the amount of solution into electrothermal atomizer, atomic absorption spectrometer wavelength 228.8nm measured cadmium Absorbance, drawing working curve with substrate addition method, the content of cadmium in a sample obtained.

3 Reagents

Preparation of the test solution and water are a water vessel used in the experiments after soaked in dilute nitric acid, washed with water level.

4 Instrument

Graphite furnace atomic absorption spectrometry (background buckle device) attached cadmium hollow cathode lamp.

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

--- Quality features. the measurement of the sample solution in the matrix phase consistent solution features quality cadmium should not exceed 0.2pg.

--- Precision. absorbance measured 10 times the highest concentration of the standard solution, the standard deviation should not exceed 2.0% of the mean absorbance;

With the lowest concentration of standard solution (not "zero" concentration of the standard) measuring the absorbance of 10 times, the standard deviation should not exceed the maximum 1.5% concentration of the standard average absorbance.

--- Linear curve. The curve is divided into five sections according to concentration, absorbance difference between the absorbance difference between the highest and the lowest segment of the segment Ratio of not less than 0.8.