JJF 2037-2023 English PDF

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JJF 2037-2023: Calibration Specification for Portable Stripping Voltammetry Heavy Metal Detectors
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Basic data

Standard ID: JJF 2037-2023 (JJF2037-2023)
Description (Translated English): Calibration Specification for Portable Stripping Voltammetry Heavy Metal Detectors
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 15,113
Date of Issue: 2023-03-15
Date of Implementation: 2023-09-15
Issuing agency(ies): State Administration for Market Regulation

JJF 2037-2023: Calibration Specification for Portable Stripping Voltammetry Heavy Metal Detectors

---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.
National Metrology Technical Specifications of the People's Republic of China JJF 2037-2023 Portable stripping voltammetry for heavy metals Detector Calibration Specifications Heavy Metal Detectors 2023-09-15 Implementation Released by the State Administration for Market Regulation Portable stripping voltammetry for heavy metals Detector Calibration Specifications Responsible Unit: National Technical Committee of Physical and Chemical Metrology Main drafting unit: Hunan Institute of Metrology and Testing Xinjiang Uygur Autonomous Region Institute of Metrology and Testing Participating in the drafting unit:Shandong Jianzhu University Jiangsu Tianrui Instrument Co:, Ltd: Xiamen Standor Scientific Instrument Co:, Ltd: This specification entrusts the National Technical Committee of Physical and Chemical Metrology to be responsible for interpretation The main drafters of this specification: Ren Yun (Hunan Institute of Metrology and Testing) Peng Lihua (Hunan Institute of Metrology and Testing) Wang Jinrong (Xinjiang Uygur Autonomous Region Institute of Metrology and Testing) Participating drafters: Zhu Xiang (Hunan Institute of Metrology and Testing) Xu Sisi (Shandong Jianzhu University) Liu Zhaogui (Jiangsu Tianrui Instrument Co:, Ltd:) Yang Xiaolu (Xiamen Standor Scientific Instrument Co:, Ltd:)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Overview(1) 4 Metrological characteristics(1) 5 Calibration conditions(2) 5:1 Environmental conditions (2) 5:2 Measuring standards and other equipment (2) 6 Calibration items and calibration methods (2) 6:1 Preparations before calibration(2) 6:2 Concentration indication error (2) 6:3 Measurement repeatability(2) 6:4 Detection limit(3) 7 Expression of Calibration Results(3) 8 Recalibration interval(3) Appendix A Calibration Raw Record Format(4) Appendix B Calibration Certificate Inner Page Format (5) Appendix C Example of Evaluation of Measurement Uncertainty of Concentration Indication Error (6)

Introduction

This specification is based on JJF 1071-2010 "National Measurement and Calibration Specification Writing Rules", JJF 1001-2011 "General "Measurement Terms and Definitions" and JJF 1059:1-2012 "Assessment and Expression of Measurement Uncertainty" were compiled: The difference between this specification and JJF 1565-2016 "Calibration Specification for Heavy Metal Water Quality Online Analyzer" is that the former is applicable Portable stripping voltammetry heavy metal detector for laboratory or field use, the latter is suitable for automatic water quality monitoring station Heavy metal online water quality monitor or analyzer: This specification is published for the first time: Portable stripping voltammetry for heavy metals Detector Calibration Specifications

1 Scope

This specification is applicable to the calibration of portable stripping voltammetry heavy metal detectors for measuring cadmium, lead and copper elements:

2 References

This specification references the following documents: JJG646-2006 pipette GB/T 6682-2008 Analytical laboratory water specifications and test methods For dated references, only the dated version applies to this specification; for undated references document, its latest version (including all amendments) applies to this specification:

3 Overview

The portable stripping voltammetry heavy metal detector (hereinafter referred to as the detector) is in a certain electrolyte solution, adding appropriate When the pre-electrolysis potential is set, after a certain period of pre-electrolysis enrichment, the metal ions to be measured are reduced and enriched on the electrode: exist The reverse scanning voltage is applied on the electrode, and the metal to be tested enriched on the electrode forms ions and dissolves into the solution: According to the solution Qualitative and quantitative detection of peak potential, peak height or peak area: The detector is mainly composed of detection unit, control unit, data acquisition unit, data processing unit and display unit, etc: grouped:

4 Metrological characteristics

The measurement characteristics of the detector are shown in Table 1: Table 1 Metrological characteristics of the detector Metrological characteristics technical indicators 0μg/L< range≤200μg/L range>200μg/L Concentration indication error is not more than ±12%, not more than ±10% Measurement repeatability ≤5% ≤4% Detection limit≤0:5μg/L ≤10μg/L Note: 1 The above indicators are not used as the basis for eligibility determination and are for reference only: 2 Select the corresponding analyte according to the intended use of the calibrated detector: 3 This indicator is applicable to cadmium, lead and copper elements: ......

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