农业环境科学学报
農業環境科學學報
농업배경과학학보
Journal of Agro-Environment Science
2014年
10期
1897-1903
,共7页
兰砥中%雷鸣%周爽%廖柏寒%崔岩山%尹乃毅%沈跃
蘭砥中%雷鳴%週爽%廖柏寒%崔巖山%尹迺毅%瀋躍
란지중%뢰명%주상%료백한%최암산%윤내의%침약
矿区%大米%体外模拟实验法%重金属%生物可给量%健康风险
礦區%大米%體外模擬實驗法%重金屬%生物可給量%健康風險
광구%대미%체외모의실험법%중금속%생물가급량%건강풍험
mining-impacted area%rice%in vitro simulated method%heavy metals%amount of bio-availability%health risk
为了评价大米中重金属对人体健康风险的影响,在湘南某矿区和非矿区采集大米样品,运用人工模拟实验方法,评价大米中 Pb、Zn、Cu、Cd 和 As 的摄入量和生物可给量。结果表明:矿区大米重金属 Pb、Zn、Cu、Cd 和 As 的含量分别为2.03、30.08、6.57、2.34、3.80 mg·kg-1,非矿区大米重金属含量分别为1.03、8.65、1.52、0.15、0.30 mg·kg-1,成人和儿童因食用矿区大米而摄入的 Pb (789.23、562.00μg·d-1)、Zn(11701.12、8332.16μg·d-1)、Cu(2555.73、1819.89μg·d-1)、Cd(910.26、648.18μg·d-1)和 As(1478.20、1052.60μg·d-1)超过因食用非矿区大米而摄入的 Pb(400.67、285.31μg·d-1)、Zn(3364.57、2395.84μg·d-1)、Cu(591.18、420.97μg· d-1)、Cd(58.51、41.67μg·d-1)和 As(116.70、83.10μg·d-1)。模拟成人和儿童胃阶段和小肠阶段,矿区大米中 Pb、Zn、Cu、Cd 和 As 的平均生物可给量都大于非矿区大米中重金属的平均生物可给量;模拟胃阶段矿区大米中 Pb、Zn、Cu、Cd 和 As 的平均生物可给量都大于模拟小肠阶段重金属的平均生物可给量。在模拟胃消化阶段,矿区大米中 Cd 的生物可给量分别是每周可耐受摄入量的3.11倍(成人)和4.42倍(儿童);在模拟小肠阶段,对于成人矿区大米中 Pb、Cd 和 As 的生物可给量没有超过每周可耐受摄入量,而对于儿童矿区大米中 Pb 和 Cd 的生物可给量都超过了每周可耐受摄入量。因此,矿区成人和儿童通过食用该区域大米将会对其身体产生健康风险,其中对儿童的健康危害更加明显。
為瞭評價大米中重金屬對人體健康風險的影響,在湘南某礦區和非礦區採集大米樣品,運用人工模擬實驗方法,評價大米中 Pb、Zn、Cu、Cd 和 As 的攝入量和生物可給量。結果錶明:礦區大米重金屬 Pb、Zn、Cu、Cd 和 As 的含量分彆為2.03、30.08、6.57、2.34、3.80 mg·kg-1,非礦區大米重金屬含量分彆為1.03、8.65、1.52、0.15、0.30 mg·kg-1,成人和兒童因食用礦區大米而攝入的 Pb (789.23、562.00μg·d-1)、Zn(11701.12、8332.16μg·d-1)、Cu(2555.73、1819.89μg·d-1)、Cd(910.26、648.18μg·d-1)和 As(1478.20、1052.60μg·d-1)超過因食用非礦區大米而攝入的 Pb(400.67、285.31μg·d-1)、Zn(3364.57、2395.84μg·d-1)、Cu(591.18、420.97μg· d-1)、Cd(58.51、41.67μg·d-1)和 As(116.70、83.10μg·d-1)。模擬成人和兒童胃階段和小腸階段,礦區大米中 Pb、Zn、Cu、Cd 和 As 的平均生物可給量都大于非礦區大米中重金屬的平均生物可給量;模擬胃階段礦區大米中 Pb、Zn、Cu、Cd 和 As 的平均生物可給量都大于模擬小腸階段重金屬的平均生物可給量。在模擬胃消化階段,礦區大米中 Cd 的生物可給量分彆是每週可耐受攝入量的3.11倍(成人)和4.42倍(兒童);在模擬小腸階段,對于成人礦區大米中 Pb、Cd 和 As 的生物可給量沒有超過每週可耐受攝入量,而對于兒童礦區大米中 Pb 和 Cd 的生物可給量都超過瞭每週可耐受攝入量。因此,礦區成人和兒童通過食用該區域大米將會對其身體產生健康風險,其中對兒童的健康危害更加明顯。
위료평개대미중중금속대인체건강풍험적영향,재상남모광구화비광구채집대미양품,운용인공모의실험방법,평개대미중 Pb、Zn、Cu、Cd 화 As 적섭입량화생물가급량。결과표명:광구대미중금속 Pb、Zn、Cu、Cd 화 As 적함량분별위2.03、30.08、6.57、2.34、3.80 mg·kg-1,비광구대미중금속함량분별위1.03、8.65、1.52、0.15、0.30 mg·kg-1,성인화인동인식용광구대미이섭입적 Pb (789.23、562.00μg·d-1)、Zn(11701.12、8332.16μg·d-1)、Cu(2555.73、1819.89μg·d-1)、Cd(910.26、648.18μg·d-1)화 As(1478.20、1052.60μg·d-1)초과인식용비광구대미이섭입적 Pb(400.67、285.31μg·d-1)、Zn(3364.57、2395.84μg·d-1)、Cu(591.18、420.97μg· d-1)、Cd(58.51、41.67μg·d-1)화 As(116.70、83.10μg·d-1)。모의성인화인동위계단화소장계단,광구대미중 Pb、Zn、Cu、Cd 화 As 적평균생물가급량도대우비광구대미중중금속적평균생물가급량;모의위계단광구대미중 Pb、Zn、Cu、Cd 화 As 적평균생물가급량도대우모의소장계단중금속적평균생물가급량。재모의위소화계단,광구대미중 Cd 적생물가급량분별시매주가내수섭입량적3.11배(성인)화4.42배(인동);재모의소장계단,대우성인광구대미중 Pb、Cd 화 As 적생물가급량몰유초과매주가내수섭입량,이대우인동광구대미중 Pb 화 Cd 적생물가급량도초과료매주가내수섭입량。인차,광구성인화인동통과식용해구역대미장회대기신체산생건강풍험,기중대인동적건강위해경가명현。
Human health risk of heavy metals(Pb, Zn, Cu, Cd and As)in rice grains collected from a mining-impacted area and a non-con-taminated area in South Hunan Province was assessed using in vitro simulation method in the present study. The contents of Pb,Zn,Cu,Cd and As in rice grains were respectively 2.03 mg·kg-1, 30.08 mg·kg-1, 6.57 mg·kg-1, 2.34 mg·kg-1 and 3.8 mg·kg-1 from the mining-im-pacted area and 1.03 mg·kg-1, 8.65 mg·kg-1, 1.52 mg·kg-1, 0.15 mg·kg-1 and 0.30 mg·kg-1 from the non-contaminated area. The accept-able daily intakes(ADI)of Pb, Zn, Cu, Cd and As for an adult and a child through the consumption of the rice grains from the mining-im-pacted area were Pb789.23 μg·d-1 and 562.00 μg·d-1, Zn 11 701.12 μg·d-1 and 8 332.16 μg·d-1, Cu 2 555.73 μg·d-1 and 1 819.89 μg·d-1, Cd 910.26 μg·d -1 and 648.18 μg·d -1, and As 1 478.20 and 1 052.60 μg·d-1, much higher than those from non-contaminated area(Pb 400.67 μg·d-1 and 285.31 μg·d-1, Zn 3 364.57 μg·d-1 and 2 395.84 μg·d-1, Cu 591.18 μg·d-1 and 420.97 μg·d-1, Cd 58.51 μg·d-1 and 41.67 μg·d-1, and As 116.70 μg·d-1 and 83.10 μg·d-1), respectively. Both gastric phase and intestinal stage stimulation showed that average bio-availability of Pb, Zn, Cu, Cd and As in rice grains was much higher from the mining impacted area than from the non-contaminated area, with greater bioavailability at the simulated gastric phase than at simulated intestinal stage. The bioavailability of Cd at simulated gas-tric phase was 3.11 times(for an adult)and 4.42 times(for a child)as much as that of the biologically tolerable weekly intake. At the sim-ulated intestinal stage, the bio-availability of Pb, Cd, and As in rice grains from the mining impacted area was lower than the tolerable weekly intake for adults, but exceeded that for children. These findings show that consuming rice grains from mining-impacted area would pose health risk to human beings, specially children.