ASTM D4192 - 15 - Standard Test Method for Potassium in Water by Atomic Absorption Spectrophotometry

ASTM D4192 - 15

Standard Test Method for Potassium in Water by Atomic Absorption Spectrophotometry

Status : Current   Published : January 2015

Format
PDF

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HARDCOPY



1.1 This test method covers the determination of low amounts of potassium in waters 2 having low solids content. The applicable range of this test method is 0.20 to 4.0 mg/L when using the 766.5-nm resonance line. The range may be extended upward by dilution of an appropriate aliquot of sample or by using the less-sensitive 404.4-nm resonance line. Many workers have found that this test method is reliable for potassium levels to 0.02 mg/L, but use of this test method at this low level is dependent on the configuration of the aspirator and nebulizer systems available in the atomic absorption spectrophotometer as well as the skill of the analyst. The precision and bias data presented are insufficient to justify use of this test method in the 0.02-mg/L range.

1.2 This test method has been used successfully with spiked reagent water. It is the analyst's responsibility to ensure the validity of this test method to other low dissolved solids matrices.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

1.4  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 use. For a specific precautionary statement, see 8.6.




Standard NumberASTM D4192 - 15
TitleStandard Test Method for Potassium in Water by Atomic Absorption Spectrophotometry
StatusCurrent
Publication Date02 January 2015
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Analysis, Atomic absorption, Potassium, Water
ICS13.060.50
PublisherASTM
FormatA4
DeliveryYes
Pages4
File Size79 KB
Price£36.00


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