Norm

ASTM D1687 - 12 en

Standard Test Methods for Chromium in Water

  • Deze norm is ingetrokken sinds 01-06-2017

50,60 61,23 Incl BTW

Over deze norm

Status Ingetrokken
Aantal pagina's 8
Gepubliceerd op 01-09-2012
Taal Engels

1.1 These test methods cover the determination of hexavalent and total chromium in water. Three test methods are included as follows:

Test Method

Concentration
Range

Sections

A—Photometric Diphenyl-
carbohydrazide

 0.01 to 0.5
    mg/L

7-15

B—Atomic
Absorption, Direct

 0.1 to 10  
    mg/L

16-24

C—Atomic Absorption,
Graphite Furnace

 5 to 100   
    μg/L

25-33


1.2 Test Method A is a photometric method that measures dissolved hexavalent chromium only. Test Methods B and C are atomic absorption methods that are generally applicable to the determination of dissolved or total recoverable chromium in water without regard to valence state.

1.3 Test Method A has been used successfully with reagent grade water Types I, II, and III, tap water, 10 % NaCl solution, treated water from a synthetic organic industrial plant that meets National Pollution Discharge Elimination System (NPDES) permit requirements, and EPA-extraction procedure leachate water, process water, lake water, effluent treatment, that is, lime neutralization and precipitation of spent pickle liquor and associated rinse water from stainless steel pickling. Test Method C has been used successfully with reagent water, stock scrubber water, lake water, filtered tap water, river water, well water, production plant water, and a condensate from a medium BTU coal gasification process. Matrices used, except for reagent water, are not available for Test Method B. It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are mathematical conversions and may not be exact equivalents; therefore, each system shall be used independently of the other.

1.5 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 specific hazard statements, see 4.2 and Note 6 and Note 7.

Details

ICS-code 13.060.50
Engelse titel Standard Test Methods for Chromium in Water
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