Food × analyte
1-Naphthol on apples
1994–2016 · 7 tested years
1,569samples tested
for this analyte
for this analyte
19samples with
a detection
a detection
1.2%of analyte-tested samples
Testing detected 1-Naphthol in 19 of 1,569 apples samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 9,975 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
7 tested years between 1994 and 2016. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1994 | 54 | 0 | 0.0% |
| 1995 | Not tested | — | — |
| 1996 | Not tested | — | — |
| 1997 | Not tested | — | — |
| 1998 | Not tested | — | — |
| 1999 | Not tested | — | — |
| 2000 | Not tested | — | — |
| 2001 | Not tested | — | — |
| 2002 | Not tested | — | — |
| 2003 | Not tested | — | — |
| 2004 | 5 | 5 | 100.0% |
| 2005 | 2 | 2 | 100.0% |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | 210 | 1 | 0.5% |
| 2010 | Not tested | — | — |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | Not tested | — | — |
| 2014 | 177 | 1 | 0.6% |
| 2015 | 679 | 7 | 1.0% |
| 2016 | 442 | 3 | 0.7% |
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: 1994, 2004, 2005, 2009, 2014, 2015, 2016.