Pesticide Concentrations in Vacuum Dust from Farm Homes: Variation between Planting and Nonplanting Seasons

Table 4

Atrazine concentrations in dust samples by location within homes and season in nanograms per gram dust (ng/g).

Location	Planting season n =31 homes		Nonplanting season n =31 homes
	GM (GSD)	Range	GM (GSD)	Range
Entryway	687 (11.4)^a	5–139,200	47 (9.1)^b	1–1,900
Living Room	285 (15.3)^a	1–1,268,000	30 (7.3)^b	1–2,300
Master Bedroom	307 (9.2)^a	10–22,500	19 (7.1)^b	1–3,630
Kitchen	566 (10.6)^a	27–697,750	41 (11.8)^b	1–15,225
House Avg.	422 (7.4)	1–1,268,000	33 (7.1)	1–15,225

^a, bGeometric means with the same letter are not significantly different from each other based on 𝑃value < 0.05 obtained from ANOVA Duncan’s Multiple Range Test.