1997-05-01

CRC Carbonyl Emissions Analysis Round Robin Program - Phase II 971609

A second carbonyl round robin was conducted to enable participating laboratories doing routine analysis of carbonyls in vehicle exhaust emissions to assess their analytical capabilities. Three sets of solutions in acetonitrile containing varying number and amounts of standard DNPH-carbonyls were prepared. The parent carbonyls are known components of vehicle exhaust emissions. The samples were designed to challenge the capabilities of the participants to separate, identify and quantify all the components. The fourteen participating laboratories included automotive, contract, petroleum and regulatory organizations. All participants were able to separate and identify the C3 carbonyls; a few were not able to separate MEK from butyraldehyde and methacrolein from butyraldehyde; and many were not able to separate adequately the isomers of tolualdehyde. Inadequate separation and lack of appropriate standards resulted in a few misidentifications. All participating labs have excellent analytical systems quality control. The interlaboratory average of the %rsd's (percent relative standard deviation) of replicate measurements ranged from 0.2 to 3.8 for all of the analytes. The recoveries of components that were separated and unambiguously identified are excellent. Interlaboratory component variabilities are generally less than 10% rsd. Recoveries of 100±6% were achieved.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Oxygenated Diesel: Emissions and Performance Characteristics of Ethanol-Diesel Blends in CI Engines

2001-01-2475

View Details

TECHNICAL PAPER

Round Robin Analysis of Alcohol and Carbonyl Synthetic Exhaust Samples - Coordinating Research Council

941944

View Details

TECHNICAL PAPER

On Cooler and Mixing Condensation Phenomena in the Long-Route Exhaust Gas Recirculation Line

2015-24-2521

View Details

X