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Standard Guide for Quality Assurance Protocols for Chemical Analysis of Atmospheric Wet Deposition
1.1 This guide describes quality assurance (QA) protocols for the determination of the anions and cations in Atmospheric Wet Deposition (AWD) shown in Table 1.
Automated Colorimetry | Ion Chromatography |
NH4+ | Cl–, NO3 –, SO42–, NH4+, Ca2+, Mg2+, Na+, K+ |
Flame Atomic Absorption Spectrophotometry | Electrometric |
Na+, K+, Ca2+ , Mg2+ | pH, specific conductance |
Inductively Coupled Plasma Spectrometry |
|
Na+, K+, Ca2+, Mg2+ |
|
1.2 Included in this guide are minimum recommended requirements for the preparation of calibration StandardDetails and suggested procedures for validating laboratory measurement results.
1.3 This guide describes minimum requirements for the frequency of analysis of quality assurance samples and recommends procedures for the evaluation of quality assurance data.
1.4 The guide's recommendations are based upon expected anion and cation concentrations in AWD (1) 2 and Appendix X1.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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