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  • BSI
    21/30424859 DC BS EN ISO 10304-4. Water quality. Determination of dissolved anions by liquid chromatography of ions - Part 4. Determination of chlorate, chloride and chlorite in water with low contamination
    Edition: 2021
    $42.22
    / user per year

Description of 21/30424859 DC 2021

This document specifies a method for the determination of the dissolved anions chlorate, chloride, and chlorite in water with low contamination (e.g. drinking water, raw water or swimming pool water).

An appropriate pretreatment of the sample (e.g. dilution) and the use of a conductivity detector (CD), UV detector (UV) or amperometric detector (AD) make the working ranges given in Table 1 feasible.

Table 1
Working ranges of the analytical method
Anion Working range Detection
mg/la
Chlorate 0,03 to 10 CD
Chloride 0,1 to 50 CD
Chloriteb 0,05 to 1 CD
0,1 to 1 UV; λ=207 nm to 220 nm
0,01 to 1 AD; 0,4 to 1,0 V
a

The working range is restricted by the ion-exchange capacity of the columns. Dilute the sample in to the working range, if necessary.

b

The minimum working range for chlorite of 0,05 mg/l was obtained using calibration checks, but the round robin trials (Annex A, Table A.4) showed that it is difficult to obtain this with sufficient accuracy. Thus great care shall be taken when working in the lower range of this method.



Standard Number21/30424859 DC
TitleBS EN ISO 10304-4. Water quality. Determination of dissolved anions by liquid chromatography of ions - Part 4. Determination of chlorate, chloride and chlorite in water with low contamination
StatusDefinitive
Publication Date2021-01-06
Identical National Standard OfISO/DIS 10304-4
DescriptorsStatistical data, Quantitative analysis, Interferences (chemical), Swimming pools, Dissolution, Water, Chromatography, Water testing, Chemical analysis and testing, Ground water, Specimen preparation, Test equipment, Ions, Working range, Potable water, Calibration, Chlorides, Chlorites, Laboratory testing, Anions, Chlorates, Quality, Determination of content, Liquid chromatography
ICS13.060.50 Examination of water for chemical substances
CommitteeEH/3/2
PublisherBSI
Pages23

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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