Water quality -- Determination of selected monovalent phenols -- Part 2: Method by derivatization and gas chromatography

رقم المستند: NL ISO 8165 2 : 2009
القطاع: Food Technology
TC: No
ICS: 13.060.50
This part of ISO 8165 specifies a method for the determination of phenols by gas chromatography, following pentafluorobenzoyl chloride (PFBC) derivatization. It may in particular be applied to the examination of drinking water, ground water and moderately contaminated surface water. With this method, lower limits of detection may be obtained compared with extraction procedures. Since other reactive compounds such as amines and in some cases alcohols may also react, this method is not applicable in all cases to the examination of waste water. The applicability to the examination of waste water should be investigated for each individual case. This method allows the determination of the phenols listed in Table 1 in a concentration range ≥ 0,1 μg/l. Other monovalent phenols may also be analysed using this method, but the applicability needs to be checked for each individual case. Table 1 — Phenols to which this method is applicable phenol 2-cyclopentyl-4-chlorophenol 2-methylphenol 4-chloro-2-benzylphenol 3-methylphenol 6-chloro-5-methyl-2-(1-methylethyl)phenol 4-methylphenol 2,3-dichlorophenol 2,4-dimethylphenol 2,4-dichlorophenol 4-ethylphenol 2,5-dichlorophenol 2,6-bis(1,1-dimethylethyl)-4-methylphenol 2,6-dichlorophenol 2-phenylphenol 2,4,6-trichlorophenol 2-benzylphenol 2,3,5-trichlorophenol 2-benzyl-4-methylphenol 2,4,5-trichlorophenol 2-chlorophenol 2,3,6-trichlorophenol 3-chlorophenol 2,3,4,5-tetrachlorophenol 4-chlorophenol 2,3,4,6-tetrachlorophenol 4-chloro-2-methyl phenol 2,3,5,6-tetrachlorophenol 4-chloro-3-methyl phenol pentachlorophenol 6-chloro-3-methyl phenol 2,4-dichloro-3,5-dimethyl phenol 2-chloro-4-f-butylphenol 2009 English 25000.00 0 995 1059 C NL ISO 8245 : 2009 No 13.060.50 60.60 Food Technology Water quality -- Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC) This International Standard gives guidance for the determination of total carbon (TC), total inorganic carbon (TIC) and total organic carbon (TOC) in drinking water, ground water, surface water, sea water and waste water. It also defines terms and specifies interferences, reagents, and sample pretreatment for water samples. The method described in this International Standard applies to water samples containing organic carbon content ranging from 0,3 mg/l to 1000 mg/l. The lower limit concentration is only applicable in special cases, for example drinking water, measured by highly sensitive instruments. Higher concentrations may be determined after appropriate dilution. This International Standard does not deal with the instrument-dependent specifications. Purgeable organic substances, such as benzene, toluene, cyclohexane and chloroform, can also be determined using this method. Cyanide, cyanate and particles of elemental carbon (soot), when present in the sample, can be determined together with the organic carbon."