Soil arsenic surveys of New Orleans: localized hazards in children's play areas.
Soil arsenic surveys of New Orleans: localized hazards in children's play areas.
复制标题
新奥尔良土壤砷调查：儿童游乐区的局部危害。
DOI：
10.1007/s10653-010-9286-x
复制
发表时间：
2010
影响因子：
4.2
通讯作者：
MielkeJr,PaulW
中科院分区：
文献类型：
--
作者：
Mielke,HowardW;Gonzales,ChrisR;Cahn,Elise;Brumfield,Jessica;Powell,EricT;MielkeJr,PaulW
Arsenic (As) ranks first on the 2005 and 2007 hazardous substances priority lists compiled for the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This study describes two New Orleans soil As surveys: (1) a survey of composite soil samples from 286 census tracts and (2) a field survey of soil As at 38 play areas associated with the presence of chromated-copper-arsenate (CCA)-treated wood on residential and public properties. The survey of metropolitan New Orleans soils revealed a median As content of 1.5 mg/kg (range <0.2–16.4) and no distinctive differences between the soils of the city core and outlying areas. Play area accessible soils associated with CCA-treated wood (N= 32) had a median As of 57 mg/kg and 78% of the samples were ≥12 mg/kg, the Louisiana soil As standard. The field survey of play areas for CCA-treated wood (N= 132 samples at 38 sites) was conducted with a portable energy-dispersive X-ray fluorescence (XRF) analyzer. Seventy-five of 132 wood samples (56.8%) were deemed CCA-treated wood. Of the 38 play areas surveyed, 14 (36.8%) had CCA-treated wood. A significant association (Fisher’s exactp-value = 0.348 × 10−6) was found between CCA-treated wood and soil As (N= 75). At one elementary school CCA-treated woodchips (As range 813–1,654 mg As/kg) covered the playgrounds. The situation in New Orleans probably exists in play areas across the nation. These findings support a precautionary program for testing soils and wood for hazardous substances at all play areas intended for children.
