Certification of the elemental composition of the BCR reference materials No. 71, containing carbon, hydrogen, bromine, chlorine, nitrogen, oxygen and sulphur, and No. 73, containing carbon, hydrogen, bromine, chlorine, fluorine and nitrogen

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6666510

Griepink, B; Hamers, L; Le Duigou, Y

The procedure is described for the characterization of two types of halogen-containing materials, intended to serve as reference materials for organic elemental analysis. The aim was to certify to within 0.2% limits in relation to each element the C, H, Br, Cl, N, O and S content of BCR compound no. 71, consisting mainly of N-(4-bromophenyl)-N'-(2-chloro-4 nitrophenyl) thiourea, and similarly the C, H, Br, Cl, F and N content of BCR compound no. 73, consisting mainly of 1-(1-(4-bromophenyl-methyl)-4-piperidinyl)-5-chloro-2-(trifluoromethyl)-1H-benzimidazole. Homogeneity of the materials was achieved by handling each material as a single batch in the final step of its preparation. The procedures used to characterize each element are listed and a statistical evaluation of the results is given.

• Research Organization: Commission of the European Communities, Ispra (Italy). Joint Research Centre
• OSTI ID: 6666510
• Report Number(s): PB-82-204991; EUR-7352-EN
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
CHEMICAL ANALYSIS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
STANDARDS