. 2019 Sep 24;9:13770. doi: 10.1038/s41598-019-50255-4

Table 1.

Concentration and occurrence of Acetamiprid, Imidacloprid and Myclobutanil in the pollen and nectar of melon flowers from 5 commercial melon fields near Madrid (Spain).

Pesticide	Class	N of fields sprayed	Mean (±SE) concentration (ppb) in melon flowers		Occurrence (% samples)	Days between field application and pollen/nectar surveys	Analytical technique
Pesticide	Class	N of fields sprayed	pollen	nectar	Occurrence (% samples)	Days between field application and pollen/nectar surveys	Analytical technique
Acetamiprid (A)	Neonicotinoid insecticide	5	482.93 ± 215.85	6.41 ± 1.45	100.0%	2–11	HPLC-QQQ
Imidacloprid (I)	Neonicotinoid insecticide	4	369.36 ± 186.31	15.34 ± 7.62	66.7%	45–71^a	HPLC-QQQ
Myclobutanil (M)	Triazole fungicide	4	0	5.58 ± 0.70	26.7%	2–15	GC-QQQ

(See details of analytical techniques in Supplementary Information).

^aTiming of application unknown for one of the 5 fields.

HPLC-QQQ: high performance liquid chromatography with triple-quadrupole mass spectrometer detector; GC-QQQ: gas chromatography with triple-quadrupole mass spectrometer detector.