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BSI PD CEN/TS 17061:2017

BSI PD CEN/TS 17061:2017

$167.15

Foodstuffs. Guidelines for the calibration and quantitative determination of pesticide residues and organic contaminants using chromatographic methods

Published By Publication Date Number of Pages
BSI 2017 40
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This Technical Specification describes the execution of calibration and quantitative evaluation of chromatographic procedures for the determination of pesticides and organic contaminants in residue analysis. In addition, the essential requirements for calibration are outlined. The calibration of analytical procedures and the evaluation of analytical results need to be conducted according to uniform principles in order to allow for a comparison of analytical results (even from different analytical procedures). They constitute the basis of any method validation and of the quality assurance within laboratories [1], [2], [3]. This Technical Specification does not consider issues of identification/qualification and extraction efficiency.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 1 Scope
2 Principle
3 General
8 4 Execution and calculation of calibrations
4.1 General/specifications
4.1.1 Working range
4.1.2 Number of calibration points
4.1.2.1 General
9 4.1.2.2 Acceptability of single-point calibrations
4.1.3 Permissible quantities for determination of response (peak areas or peak heights and peak ratio, respectively)
10 4.1.4 Stability of calibration functions
4.2 Calibration functions
4.2.1 Selection of appropriate calibration function
4.2.2 Visual linearity test
11 4.2.3 Mathematical check of linearity
4.2.4 Calibration with interpolation functions
12 4.3 Test for matrix effects
4.4 Basic calibration and calibration by means of external standard
4.4.1 Basic calibration
4.4.2 Calculation by means of external standard in case of linear calibration function without significant ordinate intercept
13 4.4.3 Calculation by means of external standard using linear calibration function
4.4.4 Calculation by means of external standard using quadratic calibration function
14 4.4.5 Calculation by means of external standard using nonlinear calibration function or weighted regression
4.5 Calculation by means of internal standard
4.5.1 General
15 4.5.2 Calculation with internal correction standard
16 4.5.3 Calculation with stable-isotope labelled standard
18 4.6 Calibration using standard addition procedures
4.6.1 General
4.6.2 Standard addition to the final extract
19 4.6.3 Standard addition to the sample before extraction
20 4.7 Procedural calibration
4.8 Calibration with chemical conversion of the standard
5 Quality assurance
5.1 Qualification of the chromatographic system
5.1.1 Equipment qualification
21 5.1.2 Drift of a calibration system
5.1.3 Performance criteria for GC and HPLC measurements
5.2 Examination of integration results
5.3 Permissible blank values in relation to the lower limit of working range
22 5.4 Frequency of calibrations
5.5 Number of analytes to be calibrated for “multi-methods”
5.6 Handling of substances with multiple peaks
5.7 Quality control chart
24 6 Expression of results (units, number of significant figures)
25 7 Examples
7.1 Example 1 — Test for variance inhomogeneity
7.2 Example 2 — Selection of appropriate calibration function
32 7.3 Example 3 — Test for matrix effects
33 7.4 Example 4 — Calibration with external standard
35 7.5 Example 5 — Calibration with internal standard
36 7.6 Example 6 — Calculation with stable-isotope labelled standard
37 7.7 Example 7 — Standard addition to final extract

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BSI PD CEN/TS 17061:2017
$167.15