40 CFR 80.56 - Measurement methods for formaldehyde and acetaldehyde.

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There are 3 Updates appearing in the Federal Register for 40 CFR 80. View below or at eCFR (GPOAccess)
§ 80.56 Measurement methods for formaldehyde and acetaldehyde.
(a) Formaldehyde and acetaldehyde will be measured by drawing exhaust samples from heated lines through either 2,4-Dinitrophenylhydrazine (DNPH) impregnated cartridges or impingers filled with solutions of DNPH in acetonitrile (ACN) as described in §§ 86.109 and 86.140 of this chapter for formaldehyde analysis. Diluted exhaust sample volumes must be at least 15 L for impingers containing 20 ml of absorbing solution (using more absorbing solution in the impinger requires proportionally more gas sample to be taken) and at least 4 L for cartridges. As required in § 86.109 of this chapter, two impingers or cartridges must be connected in series to detect breakthrough of the first impinger or cartridge.
(b) In addition, sufficient sample must be drawn through the collecting cartridges or impingers so that the measured quantity of aldehyde is sufficiently greater than the minimum limit of quantitation of the test method for at least a portion of the exhaust test procedure. The limit of quantitation is determined using the technique defined in § 80.55(d).
(c) Each of the impinger samples are quantitatively transferred to a 25 mL volumetric flask (5 mL more than the sample impinger volume) and brought to volume with ACN. The cartridge samples are eluted in reversed direction by gravity feed with 6mL of ACN. The eluate is collected in a graduated test tube and made up to the 5mL mark with ACN. Both the impinger and cartridge samples must be analyzed by HPLC without additional sample preparation.
(d) The analysis of the aldehyde derivatives collected is accomplished with a high performance liquid chromatograph (HPLC). Standards consisting of the hydrazone derivative of formaldehyde and acetaldehyde are used to determine the response, repeatability, and limit of quantitation of the HPLC method chosen for acetaldehyde and formaldehyde.
(e) Other sampling and analytical techniques will be allowed if they can be proven to have equal specificity and equal or better limits of quantitation. Data from alternative methods that can be demonstrated to have equivalent or superior limits of detection, precision, and accuracy may be accepted by the Administrator with individual prior approval.

Title 40 published on 2014-07-01

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  • 2014-08-08; vol. 79 # 153 - Friday, August 8, 2014
    1. 79 FR 46353 - Regulation of Fuels and Fuel Additives: Extension of Compliance and Attest Engagement Reporting Deadlines for 2013 Renewable Fuel Standards
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      ENVIRONMENTAL PROTECTION AGENCY
      Direct final rule.
      This rule is effective on September 29, 2014 without further notice, unless the EPA receives adverse comment by September 15, 2014. If the EPA receives adverse comment, we will publish a timely withdrawal notice in the Federal Register informing the public that the rule will not take effect.
      40 CFR Part 80

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United States Code

Title 40 published on 2014-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 80 after this date.

  • 2014-12-09; vol. 79 # 236 - Tuesday, December 9, 2014
    1. 79 FR 73007 - Delay in Issuing 2014 Standards for the Renewable Fuel Standard Program
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      ENVIRONMENTAL PROTECTION AGENCY
      Notification of delay in issuing standards.
      December 9, 2014.
      40 CFR Part 80