A measurement method and apparatus was developed to measure continuously toxic metal compounds in industrial water samples. The method was demonstrated by using copper as a sample metal. Water was injected into the sample line and subsequently into a nitrogen plasma jet, in which the samples comprising the metal compound dissolved in water were decomposed. The transmitted monochromatic light was detected and the absorbance caused by copper atoms was measured. The absorbance and metal concentration were used to calculate sensitivity and detection limits for the studied metal. The sensitivity, limit of detection, and quantification for copper were 0.45 ± 0.02, 0.25 ± 0.01, and 0.85 ± 0.04 ppm, respectively.
Agriculture and Resource Management Council of Australia and New Zealand, and Australian and New Zealand Environment and Conservation Council (ANZECC), “Guidelines for Sewerage Systems, Acceptance of Trade Waste (Industrial Waste)” (ANZECC, Canberra, Australia, 1994).
“Lead (CAS No. 7439-92-1) and Lead Compounds”, in Report on Carcinogens, Eleventh Edition, U.S. Department of Health and Human Services, Public Health Service, National Toxicology Program, http://ntp.niehs.nih.gov/ntp/roc/eleventh/profiles/s101lead.pdf.
“Cadmium (CAS No. 7440-43-9) and Cadmium Compounds”, in Report on Carcinogens, Eleventh Edition, U.S. Department of Health and Human Services, Public Health Service, National Toxicology Program, http://ntp.niehs.nih.gov/ntp/roc/eleventh/profiles/s028cadm.pdf.
OikariR.HäyrinenV.HernbergR., J. Phys. D: Appl. Phys.35, 1109 (2002).
19.
BroekaertJ. A. C., Analytical Atomic Spectrometry with Flames and Plasmas (Wiley-VCH Verlag GmbH, Weinheim, Germany, 2002), Chap. 5, p. 210.
20.
CantleJ. E., “Practical Techniques”, in Atomic Absorption Spectrometry, Techniques and Instrumentation in Analytical Chemistry, CantleJ. E., Ed. (Elsevier, Netherlands, 1982), Vol. 5, Chap. 3, p. 47.
