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Norm

ÖNORM EN ISO 10304-1

Issue date: 1995 07 01

Water quality - Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions - ......(abbreviated)

This part of ISO 10304 specifies a method for the determination of fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate in water with low contamin...
Withdrawn: 2009 08 01
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 22 Pages
Language:
German | English
Optionally co-design standards:
This part of ISO 10304 specifies a method for the determination of fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate in water with low contamination (e.g. drinking water, rain water, ground water and surface water) in the following ranges: Fluoride (F): 0,Ol mg/1 to IO mg/l Chloride (Cl): 0,l mg/l to 50 mg/l Nitrite (NO,): 0,05 mg/l to 20 mg/l Orthophosphate (PO,): 0,l mg/l to 20 mg/1 Bromide (Br): 0,05 mg/l to 20 mg/l Nitrate (NO,): 0,l mg/l to 50 mg/1 Sulfate (SO,): 0,l mg/1 to 100 mg/1 NOTE 1 Anion Symbols are used without charges throughout the text. In certain cases, the range of application may be changed by variations in the working conditions (e.g. Sample volume, dilution, separating columns, preconcentration techniques, sensitivity ranges of detectors, etc.). 1.2 Interferences 1.2.1 Some organic acids, such as malonic acid, malcic acid and malic acid, may interfere in the determination of inorganic anions if they are present in high concentrations. 1.2.2 The determination of fluoride in particular is subject to interference by formic acid, acetic acid and carbonate, even at low concentrations. 1.2.3 Cross sensitivity (lack of resolution) may occur in the case of large differentes in concentration between the anions determined (F, Cl, NO,, PO,, Br, NO,, SO,). 1.2.4 The bromide and Phosphate anions do not interfere in the working range specified, unless otherwise stated. 1.2.5 In a buffered eluent (e.g. carbonate/hydrogencarbonate), the determination will not be influenced by the Sample pH in the range of pH 2 to pH 9. 1.2.6 The concentration ratios given in table 1 were checked experimentally for various representative conditions. No interferences could be observed when 50 ~1 of Sample volume was used for the chromatographic analysis. 1.2.7 The information in 1.2.4 to 1.2.6 is valid only as long as the quality requirements of the separating (...abbreviated)
ÖNORM EN ISO 10304-1
2016 03 01
Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determi...
Norm
ÖNORM EN ISO 10304-1
2012 06 01
Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determi...
Norm
ÖNORM EN ISO 10304-1
2009 08 01
Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determi...
Norm
ÖNORM EN ISO 10304-1
1995 07 01
Water quality - Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nit...
Norm
ÖNORM M 6283
1990 03 01
Water analysis; determination of fluoride, chloride, nitrite, phosphate, bromide, nitrate and sulfat...
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