JJG 694-2009 English PDF

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JJG 694-2009: Verification Regulation for Atomic Absorption Spectrophotometers
Status: Valid

JJG 694: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 694-2009	419	Add to Cart	3 days	Verification Regulation for Atomic Absorption Spectrophotometers	Valid
JJG 694-1990	479	Add to Cart	4 days	Atomic Absorption Spectrophotometer	Obsolete

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Basic data

Standard ID: JJG 694-2009 (JJG694-2009)
Description (Translated English): Verification Regulation for Atomic Absorption Spectrophotometers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Classification of International Standard: 17.220
Word Count Estimation: 18,144
Date of Issue: 2009-10-09
Date of Implementation: 2010-04-09
Older Standard (superseded by this standard): JJG 694-1990
Regulation (derived from): AQSIQ Announcement No. 113 of 2009
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to sharp line source atomic absorption spectrophotometer (hereinafter referred to as the instrument) for initial verification, testing and use of follow-up inspection. Type of instrument for measuring the performance evaluation tests can be carried out with reference to the rules.

JJG 694-2009: Verification Regulation for Atomic Absorption Spectrophotometers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Verification Regulation for Atomic Absorption Spectrophotometers National Metrology Verification Regulations of the People's Republic Atomic absorption spectrophotometer Released on.2009-10-09 2010-04-09 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Atomic absorption spectrophotometer verification procedure Replace JJG 694-1990 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on October 09,.2009, and Effective April 09,.2010. Focal Point. National Physical and Chemical Metrology Technical Committee Main drafting unit. China Institute of Metrology Participated in the drafting unit. Beijing Tongzhou Weipu Technology Co., Ltd. Hebei Institute of Metrology This procedure entrusts the National Physical and Chemical Metrology Technical Committee to explain The main drafters of this procedure. Cui Yanjie (China Institute of Metrology) Ma Liandi (China Institute of Metrology) Shi Naijie (China Institute of Metrology) Participate in the drafters. Sun Hongwei (Beijing Tongzhou Weipu Technology Co., Ltd.) Yang Xue (Hebei Institute of Metrology)

table of Contents

1 Scope (1) 2 Overview (1) 3 Metrological performance requirements (1) 4 General technical requirements (2) 5 measuring instrument control (2) 5.1 Verification conditions (2) 5.2 Verification project (3) 5.3 Verification method (4) 5.4 Processing of verification results (7) 5.5 Verification cycle (7) Appendix A Calculation of Slope and Intercept in Linear Regression (8) Appendix B Atomic Absorption Spectrophotometer Verification Record Format (Reference) (9) Appendix C Verification certificate page format (12) Appendix D Format of the verification result page (13) Atomic absorption spectrophotometer verification procedure

1 Scope

This procedure is applicable to the first verification and subsequent inspection of the sharp line source atomic absorption spectrophotometer (hereinafter referred to as the instrument). And the in-use test. The measurement performance test in the type evaluation of the instrument can be carried out with reference to this specification.

2 Overview

Atomic absorption spectrophotometer is based on the degree of absorption of characteristic radiation by the ground state atoms of the measured element. Analysis of the instrument. The measurement principle is based on Lambert's law of light absorption. A=-lg I0=-lgT=kcL (1) Where. A---absorbance; I0---incident light intensity; I---transmitted light intensity; T---transmittance; k---absorbance coefficient; c---the concentration of the measured element in the sample; L---the optical path of light passing through the atomizer. The main structural block diagram of the instrument is shown in Figure 1. Figure 1 Instrument structure diagram According to the beam form, the instrument can be divided into single beam type and double beam type; according to the type of atomizer, it can be divided into flame atomization. And flameless (graphite furnace) atomizers, etc.

3 Metrological performance requirements

The measurement performance requirements of the atomic absorption spectrophotometer are shown in Table 1. Table 1 Instrument metrology performance requirements project Metrological performance Flame atomizer graphite furnace atomizer Wavelength indication error Repeatability Wavelength indication error does not exceed ±0.5nm, wave Long repeatability is no more than 0.3nm Same as left Spectral bandwidth deviation does not exceed ±0.02nm with the left ......

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