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char = s;code = 115
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char = .;code = 46
result sql = Distribution of soil arsenic species, lead and arsenic bound to humic acid molar mass fractions in a contaminated apple orchard.
Distribution of soil arsenic species, lead and arsenic bound to humic acid molar mass fractions in a contaminated apple orchard.
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char = c;code = 99
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char = c;code = 99
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char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = e;code = 101
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char = o;code = 111
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char = s;code = 115
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char = L;code = 76
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char = H;code = 72
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char = e;code = 101
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char = h;code = 104
char = e;code = 101
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char = m;code = 109
char = e;code = 101
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char = l;code = 108
char = e;code = 101
char = s;code = 115
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char = f;code = 102
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char = P;code = 80
char = b;code = 98
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = A;code = 65
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char = e;code = 101
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char = d;code = 100
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char = a;code = 97
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char = a;code = 97
char = s;code = 115
char = m;code = 109
char = a;code = 97
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char = m;code = 109
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
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char = l;code = 108
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char = i;code = 105
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = i;code = 105
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = m;code = 109
char = o;code = 111
char = n;code = 110
char = s;code = 115
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char = r;code = 114
char = a;code = 97
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = A;code = 65
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = A;code = 65
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = V;code = 86
char = );code = 41
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
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char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = c;code = 99
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char = n;code = 110
char = f;code = 102
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
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char = ;code = 32
char = t;code = 116
char = h;code = 104
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char = ;code = 32
char = t;code = 116
char = o;code = 111
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char = ;code = 32
char = c;code = 99
char = m;code = 109
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = i;code = 105
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result sql = Excessive application of lead arsenate pesticides in apple orchards during the early 1900s has led to the accumulation of lead and arsenic in these soils. Lead and arsenic bound to soil humic acids (HA) and soil arsenic species in a western Massachusetts apple orchard was investigated. The metal-humate binding profiles of Pb and As were analyzed with size exclusion chromatography-inductively coupled plasma mass spectrometry (SEC-ICP-MS). It was observed that both Pb and As bind "tightly" to soil HA molar mass fractions. The surface soils of the apple orchard contained a ratio of about 14:1 of water soluble As (V) to As (III), while mono-methyl (MMA) and di-methyl arsenic (DMA) were not detectable. The control soil contained comparatively very low levels of As (III) and As (V). The analysis of soil core samples demonstrated that As (III) and As (V) species are confined to the top 20 cm of the soil.

Publication: Environ. Pollut. 2006 Sep ;143(2)::197-205.
Publication Date: 2006 Sep
Study Author(s): Newton, Kimberly;Amarasiriwardena, Dulasiri;Xing, Baoshan;
Institution: School of Natural Science, Hampshire College, 869 West Street, Amherst, MA 01002, USA.
Shortcut link to this study:
Excessive application of lead arsenate pesticides in apple orchards during the early 1900s has led to the accumulation of lead and arsenic in these soils. Lead and arsenic bound to soil humic acids (HA) and soil arsenic species in a western Massachusetts apple orchard was investigated. The metal-humate binding profiles of Pb and As were analyzed with size exclusion chromatography-inductively coupled plasma mass spectrometry (SEC-ICP-MS). It was observed that both Pb and As bind "tightly" to soil HA molar mass fractions. The surface soils of the apple orchard contained a ratio of about 14:1 of water soluble As (V) to As (III), while mono-methyl (MMA) and di-methyl arsenic (DMA) were not detectable. The control soil contained comparatively very low levels of As (III) and As (V). The analysis of soil core samples demonstrated that As (III) and As (V) species are confined to the top 20 cm of the soil.
PMID: 16480799

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