ASTM D5827-2009e1
用离子色谱法分析发动机冷却液的氯化物和其他阴离子标准试验方法

Standard Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography

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标准号

ASTM D5827-2009e1

发布日期

2009年

实施日期

废止日期

无

中国标准分类号

G17

国际标准分类号

71.100.45 (Refrigerants and antifreezes)

发布单位

US-ASTM

适用范围

This test method provides for the qualitative and quantitative determination of common anions in engine coolant in the milligrams per litre to low percent range and requires only a few millilitres or microlitres of sample per test, with results available in less than 30 min. Acceptable levels of chloride and other anions vary with manufacturer''s blending specifications and applicable ASTM minimum or maximum specifications.

1.1 This test method covers the chemical analysis of engine coolant for chloride ion by high-performance ion chromatography (HPIC). Several other common anions found in engine coolant can be determined in one chromatographic analysis by this test method.

1.2 This test method is applicable to both new and used engine coolant.

1.3 Coelution of other ions may cause interferences for any of the listed anions. In the case of unfamiliar formulations, identification verification should be performed by either or both fortification and dilution of the sample matrix with the anions of interest.

1.4 Analysis can be performed directly by this test method without pretreatment, other than dilution, as required by the linear ranges of the equipment. Table 1 indicates several applicable anions and approximate detection limits.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to its use.

TABLE 1 Analytes and Minimum Detection Limits

Analyte	Detection Limit, mg/LA
Chloride (Clx2212;)	2.0
Nitrite (NO2x2212;)	5.0
Bromide (Br)	4.0
Nitrate (NO3x2212;)	7.1
o-Phosphate (HPO4)2x2212;	20.0
Sulfate (SO4)2x2212;	8.0
Oxalate (C2O4)2x2212;	12.0

^A Determined using 100-x03BC;L sample volume. Sample diluted 99 + 1 (v/v) with chromatographic eluant 30-x03BC;S/cm full scale, suppressed conductivity detection. Dionex AS4ASC column with AG4ASC guard columns. Other systems will require MDL determinations using chosen dilution factors, eluants, columns, and detector.

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