Food × analyte
DDE p,p' on sweet potatoes
1998–2018 · 9 tested years
4,171samples tested
for this analyte
for this analyte
10samples with
a detection
a detection
0.2%of analyte-tested samples
Testing detected DDE p,p' in 10 of 4,171 sweet potatoes samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 5,927 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
9 tested years between 1998 and 2018. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1998 | 357 | 0 | 0.0% |
| 1999 | Not tested | — | — |
| 2000 | Not tested | — | — |
| 2001 | Not tested | — | — |
| 2002 | Not tested | — | — |
| 2003 | 734 | 1 | 0.1% |
| 2004 | 743 | 2 | 0.3% |
| 2005 | Not tested | — | — |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | 54 | 2 | 3.7% |
| 2009 | 320 | 1 | 0.3% |
| 2010 | 553 | 1 | 0.2% |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | Not tested | — | — |
| 2014 | Not tested | — | — |
| 2015 | Not tested | — | — |
| 2016 | 532 | 1 | 0.2% |
| 2017 | 701 | 1 | 0.1% |
| 2018 | 177 | 1 | 0.6% |
Testing panels and detection limits change. These observations do not establish a causal trend.
About these results
Source: USDA Pesticide Data Program. Included annual releases: 1998, 2003, 2004, 2008, 2009, 2010, 2016, 2017, 2018.