The mean Cd leachable concentration

The mean Cd leachable concentrations were reduced from 4.52 to 0.89 and 0.52 mg/l
(80 and 88% reduction) after 7 and 14 days of stabilization. Cu leachable concentrations
were reduced from 295 to 79.1 and 37.2 mg/l (73 and 87% reduction). At the 7th and 14th
days, the mean Ni leachable concentrations were reduced to 8.9 and 9.1, respectively, from
19.0 mg/l (52% reduction). Pb leachable concentrations were reduced from 956 to 3.9 and
1.5 mg/l (>99.5% reduction). This shows that phosphate is particularly promising in immobilizing
Pb contaminated soil. Zn leachable concentrations were reduced from 3153 to
460 and 344 mg/l (85 and 89% reduction). Many researchers have examined the stabilization
of metals in contaminated soils. Chowdhury et al. [26] reported a 22,388 mg Pb/kg
contaminated soil treated with 5% phosphate-based additive. Pb leaching concentration
was reduced from 180 to 3.6 mg/l. Basing on a geochemical modeling, Ruby et al. [15]
reported that the addition of phosphate amendment to Pb-bearing soil resulted in aqueous
lead solubility of 0.1
g/l in soil. Ma et al. [17] reported that phosphate rocks reduced
water-soluble Pb from a contaminated soil by 56.8–100%. Ma [20] reported that hydroxyapatite
(Ca10(PO4)6(OH)2) effectively immobilized (>71%) of the aqueous Pb in four sites
of PbHAsO4 contaminated soil. Chlopecka and Adriano [18] reported that the ameliorants
of lime and apatite (Ca5(PO4)3OH) decreased the leaching concentration of Zn in a contaminated
soil. Berti and Cunningham [11] investigated three sites of Pb contaminated soil
from 1200 to 3500 mg/kg. The leachable soil Pb was significantly reduced in all cases from
as high as 30 mg Pb/l to below the regulatory limit of 5 mg/l after treatment of 0.5% of
P to the soil. Chen et al. [21] reported that a Pb, Cd, and Zn contaminated soil was stabilized
with apatite. The removals were about 0.729 mmol of Pb, 0.489–1.317 mmol of
Cd, and 0.596–2.187 mmol of Zn/g of apatite. Eighmy et al. [23] added 1.2 mol of H3PO4
to 1 kg dry scrubble residue and the leachable concentrations of heavy metal reductions
were Cd (38%), Cu (58%), Pb (98%), and Zn (28%). Zhang et al. [22] reported that a Pb
contaminated soil was added apatite and the soluble Pb concentration was 96% reduced in
suspension. Hettiarachchi et al. [24] added 5 g of P to five sites of Pb contaminated soil
ranging from 4463 to 42,592 mg/kg soil. The reductions in bioavailable Pb ranged from 15
to 41%. These results showed that phosphate-based additive was able to form less soluble
minerals with heavy metals in aqueous soil and can reduce leachable concentration of heavy
metals, particularly Pb.

結果 (中文) 1:

平均的裁谈会可浸出浓度从 4.52 个减少到 0.89 和 0.52 毫克/升（80 和 88%的减少） 后 7 至 14 天的稳定。可地浸铜浓度从 295 个减少到 79.1 和 37.2 毫克/升 (73 和 87%减少)。在第 7 和第 14天，平均的倪可浸出浓度被减少到 8.9 和 9.1，分别从19.0 毫克/升 （减少 52%）。铅可浸出浓度从 956 个减少到 3.9 和1.5 毫克/升 （> 99.5%减少）。这表明磷酸酯是在固定化特别有前途铅污染土壤。可地浸锌浓度减少从 3153 到460 和 344 毫克/升 (85 和 89%减少)。许多研究者们研究了稳定被污染的土壤中的重金属。乔杜里等人 [26] 报道 22,388 毫克铅/千克被污染的土壤处理 5%磷酸基添加剂。铅浸出浓度从 180 名减至 3.6 毫克/l.基于地球化学的建模，红宝石 et al.[15]报告说增加铅轴承土壤磷酸修正案导致在水溶液中铅在土壤中溶解度为 0.1 g/l。马 et al.[17] 报道磷矿减少从 56.8 — — 100%的污染土壤的水溶性铅。马 [20] 报道，羟基磷灰石(Ca10(PO4)6(OH)2) 有效固定化 （> 71%） 水溶液中的铅的四个地点PbHAsO4 的污染土壤。Chlopecka 和 Adriano [18] 报告说，调理石灰和磷灰石 （Ca5(PO4)3OH) 降低锌中污染的浸出浓度soil. Berti and Cunningham [11] investigated three sites of Pb contaminated soilfrom 1200 to 3500 mg/kg. The leachable soil Pb was significantly reduced in all cases fromas high as 30 mg Pb/l to below the regulatory limit of 5 mg/l after treatment of 0.5% ofP to the soil. Chen et al. [21] reported that a Pb, Cd, and Zn contaminated soil was stabilizedwith apatite. The removals were about 0.729 mmol of Pb, 0.489–1.317 mmol ofCd, and 0.596–2.187 mmol of Zn/g of apatite. Eighmy et al. [23] added 1.2 mol of H3PO4to 1 kg dry scrubble residue and the leachable concentrations of heavy metal reductionswere Cd (38%), Cu (58%), Pb (98%), and Zn (28%). Zhang et al. [22] reported that a Pbcontaminated soil was added apatite and the soluble Pb concentration was 96% reduced insuspension. Hettiarachchi et al. [24] added 5 g of P to five sites of Pb contaminated soilranging from 4463 to 42,592 mg/kg soil. The reductions in bioavailable Pb ranged from 15to 41%. These results showed that phosphate-based additive was able to form less solubleminerals with heavy metals in aqueous soil and can reduce leachable concentration of heavymetals, particularly Pb.

結果 (中文) 3:

平均镉浸出浓度从4.52降低到0.89和0.52毫克/升
（80和减少88%）7和14天的稳定后。铜的浸出浓度
从295降低到79.1和37.2毫克/升（73减87%）。在第七和第十四
天，平均镍浸出浓度分别降低到8.9和9.1，分别，从
19 mg/L（减少52%）。Pb的浸出浓度从956降低到3.9，
1.5 mg/L（> 99.5%还原）。这表明，磷酸盐是固定
土壤铅污染特别有前途。锌浸出的浓度从3153降低到
460和344毫克/升（85减89%）。许多研究人员研究重金属污染土壤的稳定
。乔杜里等人。[ 26 ]报道22，388毫克/公斤
铅污染的5%磷酸基添加剂处理的土壤。
Pb的浸出浓度从180减少到一个地球化学建模3.6 mg/L，红宝石等。[ 15 ]
报道，修订土壤磷酸铅轴承导致土壤在0.1
g/L的水
铅溶解度增加。Ma等人。[ 17 ]报道，减少
磷矿56.8–100%污染土壤中的水溶性铅。马[ 20 ]报道，
羟基磷灰石（Ca10（PO4）6（OH）2）有效地固定（> 71%）在pbhaso4污染土壤的四个
水铅。chlopecka和阿德里亚诺[ 18 ]报道，石灰、磷灰石（Ca5（PO4）改良剂
3OH）降低浸出浓度Zn污染土壤中
。贝尔蒂和坎宁安[ 11 ]研究了三位从1200到3500的铅污染土壤
毫克/公斤。浸土壤Pb显著减少在所有情况下，从
高达30 mg/L铅低于5毫克/升的监管限制的
P 0.5%处理后的土壤。陈等人。[ 21 ]报道，Pb，Cd，Zn污染土壤稳定
磷灰石。去除率约0。729浓度的铅，0.489–1.317 mmol/L
CD，和0.596–2.187毫摩尔/克磷锌。艾米等人。【23】加入1.2摩尔的磷酸
1公斤干scrubble残留和重金属的浸出浓度降低
CD（38%）（58%），Cu，Pb，Zn（98%）和（28%）。张某等人。[ 22 ]报道，铅污染土壤中加入
磷灰石和可溶性铅浓度为96%
悬架降低。赫蒂亚拉契等人。[ 24 ]添加5 g p五点铅污染土壤的
范围从4463到42592 mg / kg土壤。在生物可利用的铅减少为15
41%。这些结果表明，磷酸基的添加剂，能形成不溶
矿物与水土壤重金属浸出浓度，可以减少重
金属，尤其是铅。