Table 7 Comparison of dust lead from floors and windowsills from sampled childcare centers around the world.

This Study

Pacific Northwest, USA

0.62 (0.32); <0.27–1.4^a

1.8 (1.8); <0.27–6.8^a

ng/cm²

Marshall et al. [23]

Clark County, Nevada

16.5 (71.9); <21.5–1292^a

45.73 (103.7); <43–797^a

ng/cm²

HUD Report 2003 [5]

USA

1.4 (2.2); 0.65; 29.6^b

22 (91); 2.6; 1,243^b

ng/cm²

Durkee et al. [21]

Yakima Valley, Washington

0.43–6.8^c

NS^d

ng/cm²

Weismann et al. [20]

Iowa City, Iowa

<2.7–54^c

15–18,000^c

ng/cm²

Canha et al. [30]

Clermont-Ferrand and its surrounding area in the Auvergne region, France

16 (19); 9^e

NS^d

ng/cm²

John et al. [25]

Soshanguve and Pretoria East, South Africa

17.3 ^f,g; 6.4 ^f,h

55.8 ^f,g; 10.0 ^f,h

ng/cm²

Orlova et al. [24]

Moscow, Russia

<1700ⁱ

NS^d

ng/cm²

Washington State DOH [29]

Six Counties, Washington

0–1000^c

NS^d

µg/g

Fernandez et al. [26]

Caracas Valley, Venezuela

732–1707^c

NS^d

µg/g

Berglund et al. [27]

Sweden

44–240^c

NS^d

µg/g