YS/T 536.11-2009Methods for chemical analysis of bismuth. Determination of mercury content. Atomic fluorescence 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 11.

The partial replacement of YS/T 536.11-2006 (formerly GB/T 8220.11-1998) "Methods for chemical analysis of bismuth cold vapor atomic absorption Determination of mercury content "Spectrometry. Compared with YS/T 536.11-2006, this section has the following changes.

--- Alternative cold vapor atomic absorption spectrometry atomic fluorescence spectrometry;

--- Complements the precision and 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.

1 Scope

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

This section applies to the determination of bismuth in the amount of mercury. Measurement range (mass fraction). 0.00003% - 0.00006%.

2 Method summary

The sample is dissolved in nitric acid in a nitric acid solution, stannous chloride as a reducing agent, with argon as the carrier gas, and the resulting mercury vapor atomic import raw Sub fluorescence spectrometer measured.

3 Reagents

4 Instruments and devices

Atomic fluorescence spectrometer, with a high-intensity mercury hollow cathode lamp.

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

Detection limit. not more than 1ng/mL.

Precision. Measuring 0.1µg/mL standard solution of mercury in fluorescent intensity 10 times the standard deviation should not exceed the average fluorescence intensity of 5.0%.

Linear curve. The curve is divided into five sections according to concentration, than the difference between the absorbance of the absorbance difference between the highest and the lowest segment, it should not be less than 0.9.

Readings; 700mL/min. atomic fluorescence spectrometer with reference to the working conditions. Lamp current. 35mA;.; carrier gas flow negative high voltage 275V Room. 18s; Delay Time. 6s.