Three Different Spectrophotometric Methods for Simultaneous Determination of Pyriproxyfen and Chlorothalonil Residues in Cucumber and Cabbage Samples

Table 7

Comparison of the proposed methods with some other methods.

Pyriproxyfen
Analytical parameters	Zero crossing	RSD	MCRS	Literature method [7]	Literature method [9]
Linearity range (mg·kg^−1)	1–30	1–30	1–30	0.002–0.4	1–25
LOD (mg·kg^−1)	0.254–0.312	0.270–0.302	0.211	0.001–0.05	0.217
Recovery (%)	82.12–97.40	83.51–96.98	88.00–95.95	60–64	86.03–94.55
RSD (%)	Below 4.59	Below 4.95	Below 4.56	9–13	1.28
Application	Cucumbers and cabbages	Cucumbers and cabbages	Cucumbers and cabbages	Oranges	Tomatoes
Chlorothalonil
Analytical parameters	Zero crossing	RSD	MCRS	Literature method [19]	Literature method [29]
Linearity range (mg·kg^−1)	0.5–7.0	0.5–7.0	0.5–7.0	0.005–5.0	0.5–10
LOD (mg·kg^−1)	0.112–0.154	0.144–0.153	0.131	0.02	0.05
Recovery (%)	82.24–97.04	81.51–96.85	87.37–96.44	86.2–103.3	71–93
RSD (%)	Below 5.37	Below 5.45	Below 4.43	Below 10.5	Below 6
Application	Cucumbers and cabbages	Cucumbers and cabbages	Cucumbers and cabbages	Cucumbers and tomatoes	Cabbages

RSD: ratio spectra derivative method; MCRS: mean centering of the ratio spectra method; RSD%: percentage relative standard deviation.