Arsenic and Lead Uptake by Vegetable Crops Grown on Historically Contaminated Orchard Soils

Table 1

Important properties and total and water-soluble Pb and As of the orchard soils. Standard deviations of mean values based on duplicate measurements are reported for CEC_e and total and soluble Pb and As.

Soil	pH	CECe (mmoles/kg)	OM (%)	Total Pb (mg/kg)	Total As (mg/kg)	Soluble Pb (µg/L)	Soluble As (µg/L)
Control	5.9	101±2	2.50	16.5±0.8	6.9±0.5	2.5±0.7	6.5±0.7
A1	5.8	133±35	5.30	123±16	35.8±2.4	9.5±0.7	19±1.4
A3	6.2	135±9	4.75	244±14	67.8±3.8	57.5±3.5	83.5±3.5
H11	4.9	48±6	5.00	289±38	70.6±1.9	72±17	35±2.8
A6	6.5	159±11	5.13	400±39	91.3±7.9	20±19.8	124±7
G6	6.2	174±3	7.40	915±149	211±49	153±69	745±80