Results for Diesel Exhaust

You may use, distribute or copy the information in these data tables, with attribution to Biomonitoring California.
For more information, visit our researchers page or contact us.
Results on page last updated:

Chemical Group: Diesel Exhaust

  • Measured in: Urine

Project: California Regional Exposure Study, Los Angeles County (CARE-LA)

CARE LA Study logo, showing California in blue with Los Angeles County in orange
  • Study Group Subset: Adults

Unweighted Results

Chemical measured Indicates Exposure to Adjusted for Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight
Lower Upper 25th 50th 75th 95th
6-OHNP 1-Nitropyrene Specific-gravity pg/L^ 109 110 89 130 60 120 200 660 90.8% 9.4 pg/L
8-OHNP 1-Nitropyrene Specific-gravity pg/L^ 149 88 76 100 51 91 160 400 87.2% 11.4 pg/L

Project: California Regional Exposure Study, Region 2 (CARE-2)

Logo for the CARE-2 study showing a blue map of California with the eastern part of California in orange
  • Study Group Subset: Adults

Unweighted Results

Chemical measured Indicates Exposure to Adjusted for Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight
Lower Upper 25th 50th 75th 95th
6-OHNP 1-Nitropyrene Specific-gravity pg/L^ 142 150 120 180 83 150 300 960 88.7% 13 pg/L
8-OHNP 1-Nitropyrene Specific-gravity pg/L^ 155 89 76 100 49 78 160 410 76.1% 22 pg/L

Project: East Bay Diesel Exposure Project (EBDEP)

  • Study Group Subset: Children

Unweighted Results

Chemical measured Indicates Exposure to Adjusted for Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
6-OHNP 1-Nitropyrene Specific-gravity pg/L^ 40 150 110 200 63 170 330 1100 94.2% 15.5 pg/L §
8-OHNP 1-Nitropyrene Specific-gravity pg/L^ 40 130 100 170 61 130 260 740 95.2% 21.2 pg/L
  • Study Group Subset: Adults

Unweighted Results

Chemical measured Indicates Exposure to Adjusted for Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
6-OHNP 1-Nitropyrene Specific-gravity pg/L^ 38 240 180 310 130 240 540 1500 97.8% 15.5 pg/L † Δ
8-OHNP 1-Nitropyrene Specific-gravity pg/L^ 40 150 120 190 82 160 290 730 94.7% 21.2 pg/L