1. ISO 15202, Workplace Air—Determination of Metals and Metalloids in Airborne Particulate Matter by Inductively Coupled Plasma Atomic Emission Spectrometry, Part 1 Sampling, International Standards Organisation, Geneva, Switzerland, 2001
2. EN 481, Workplace Atmospheres—Size Fraction Definitions for Measurement of Airborne Particles, European Commission for Normalisation (CEN), Brussels, Belgium, 1993
3. ISO 15202, Workplace Air—Determination of Metals and Metalloids in Airborne Particulate Matter by Inductively Coupled Plasma Atomic Emission Spectrometry, Part 2 Sample Preparation, International Standards Organisation, Geneva, Switzerland, 2001
4. ASF 2000:3, Hygieniska Gränsvärden [Occupational Exposure Limits] (in Swedish), The Swedish Work Environment Authority, Solna, Sweden, 2000