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Two hundred seventeen tap water samples, from homes in 26 counties of eastern Kentucky, western West Virginia, southeastern Ohio, and northeastern Tennessee, USA, were analyzed for arsenic (As) by Hydride Generation AAS. Nearly half of the 179 samples from private wells had detectable arsenic, and, of these, 43% had 0.5–1.0 ppb, 34%, 1.1–3.0 ppb, 6%, 3.1–5.0 ppb, 11%, 5.1–10.0 ppb, and 6% had As far...
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