Food × analyte
1-Naphthol on pears
1997–2022 · 7 tested years
2,986samples tested
for this analyte
for this analyte
17samples with
a detection
a detection
0.6%of analyte-tested samples
Testing detected 1-Naphthol in 17 of 2,986 pears samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 7,577 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
7 tested years between 1997 and 2022. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1997 | 142 | 0 | 0.0% |
| 1998 | Not tested | — | — |
| 1999 | Not tested | — | — |
| 2000 | Not tested | — | — |
| 2001 | Not tested | — | — |
| 2002 | Not tested | — | — |
| 2003 | Not tested | — | — |
| 2004 | 7 | 7 | 100.0% |
| 2005 | 10 | 10 | 100.0% |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | Not tested | — | — |
| 2010 | Not tested | — | — |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | Not tested | — | — |
| 2014 | Not tested | — | — |
| 2015 | 705 | 0 | 0.0% |
| 2016 | 707 | 0 | 0.0% |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | Not tested | — | — |
| 2021 | 707 | 0 | 0.0% |
| 2022 | 708 | 0 | 0.0% |
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: 1997, 2004, 2005, 2015, 2016, 2021, 2022.