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008190904t19731973onc     ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn---
0861 |aEn36-508/26E-PDF|zEn36-508/26
1001 |aWales, R. W., |eauthor.
24510|aInterlaboratory quality control study no. 5 : |bchromium, iron, molybdenum and vanadium / |cR.W. Wales and D.J. McGirr.
264 1|aBurlington, Ontario : |bInland Waters Directorate, Canada Centre for Inland Waters, |c1973.
264 4|c©1973
300 |a1 online resource (v, 6 pages).
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aReport series ; |vno. 26
500 |aPage iv blank and unnumbered in original print edition and omitted in this copy.
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references (page 5).
520 |a"Samples containing known amounts of chromium, iron, molybdenum and vanadium were distributed to thirteen laboratories to be analyzed by the laboratories' usual methods. The majority of laboratories determined the metals by atomic absorption; in addition, iron was determined colorimetrically for comparison. Only a few participants were able to analyze all four metals, and in the case of molybdenum and vanadium the small number of results received made it difficult to come to firm conclusions about the reliability of the method. The precision for chromium was better than in a previous study. The results obtained for iron by atomic absorption with solvent extraction were good, while the colorimetric method was intermediate in precision and sensitivity between solvent extraction and direct aspiration using atomic absorption"--Summary, page v.
530 |aIssued also in print format.
69207|2gccst|aWater
69207|2gccst|aWater quality
69207|2gccst|aAnalysis
7001 |aMcGirr, D. J., |eauthor.
7101 |aCanada. |bEnvironment Canada.
7101 |aCanada. |bInland Waters Directorate.
830#0|aReport series (Canada. Inland Waters Directorate)|vno. 26.|w(CaOODSP)9.862410
85640|qPDF|s475 KB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en36-508/En36-508-26-eng.pdf