ENV 14138:2001

Foreword
1 Scope
2 Normative references
3 Principle
   3.1 Preparation of the test solution
   3.2 Instrumental techniques
       3.2.1 Flame atomic absorption spectrometry (FAAS)
       3.2.2 Inductively coupled plasma emission
             spectrometry (ICP-ES)
4 Apparatus
   4.1 General
   4.2 Volumetric glassware
   4.3 Filtration system
   4.4 Instruments
       4.4.1 Flame atomic absorption spectrometer
       4.4.2 Inductively coupled plasma emission
             spectrometer
5 Reagents
   5.1 General
   5.2 Nitric acid (HNO[3])
       5.2.1 Concentrated nitric acid
       5.2.2 Nitric acid 1:1 (V/V)
       5.2.3 Nitric acid 1:2 (V/V)
   5.3 Hydrochloric acid (HCI)
       5.3.1 Concentrated hydrochloric acid
       5.3.2 Hydrochloric acid 1:1 (V/V)
   5.4 Ammonia solution
   5.5 Pure lead
   5.6 Manganese nitrate solution
   5.7 Potassium permanganate solution
   5.8 Standard solutions
       5.8.1 Standard solutions (1 g/l)
       5.8.2 Standard solutions (100 mg/l)
       5.8.3 Standard solutions (10 mg/l)
       5.8.4 Multi-element solutions (either 10 mg/l or
             100 mg/l)
6 Sampling and sample preparation
7 Procedure
   7.1 Preparation of the test solution
       7.1.1 Dissolution
       7.1.2 Co-precipitation with manganese dioxide
       7.1.3 Test solution
   7.2 Preparation of the synthetic test solution
   7.3 Preparation of the blank test solution
   7.4 Preparation of the calibration solutions
8 Determination of elements by FAAS
   8.1 General
   8.2 Calibration and measurement of the test solution
   8.3 Expression of results
       8.3.1 Analyte recovery rate
       8.3.2 Analyte content in the sample
9 Determination of elements by ICP-ES
   9.1 General
   9.2 Calibration and measurement of the test solution
   9.3 Expression of results
       9.3.1 Analyte recovery rate
       9.3.2 Analyte content in the sample
10 Test report
Bibliography

This European Prestandard specifies methods using flame atomic absorption spectrometry (FAAS) and inductively coupled plasma emission spectrometry (ICP-ES) for the determination of elements at low content in lead for the ranges given in Table 1.Higher contents than those listed in Table 1 should be determined according to ENV 13800.These methods are intended as the definitive methods in case of dispute for the determination of elements at low content in lead. They are also recommended for the analysis of Certified Reference Materials (CRM) and Reference Materials (RM) which are used in analysis according to ENV 12908.