国产bbaaaaa片,成年美女黄网站色视频免费,成年黄大片,а天堂中文最新一区二区三区,成人精品视频一区二区三区尤物

首頁> 美國衛(wèi)生研究院文獻(xiàn)>ISRN Toxicology >Speciation of Chromium in Soil and Sludge in the Surrounding Tannery Region Ranipet Tamil Nadu
【2h】

Speciation of Chromium in Soil and Sludge in the Surrounding Tannery Region Ranipet Tamil Nadu

機(jī)譯：泰米爾納德邦拉尼佩特制革廠周邊地區(qū)土壤和污泥中鉻的形態(tài)

代理獲取
本網(wǎng)站僅為用戶提供外文OA文獻(xiàn)查詢和代理獲取服務(wù)，本網(wǎng)站沒有原文。下單后我們將采用程序或人工為您竭誠獲取高質(zhì)量的原文，但由于OA文獻(xiàn)來源多樣且變更頻繁，仍可能出現(xiàn)獲取不到、文獻(xiàn)不完整或與標(biāo)題不符等情況，如果獲取不到我們將提供退款服務(wù)。請知悉。
  • 摘要
  • 著錄項(xiàng)
  • 相似文獻(xiàn)
  • 相關(guān)主題

摘要

The distribution and mobility of chromium in the soils and sludge surrounding a tannery waste dumping area was investigated to evaluate its vertical and lateral movement of operational speciation which was determined in six steps to fractionate the material in the soil and sludge into (i) water soluble, (ii) exchangeable, (iii) carbonate bound, (iv) reducible, (v) oxidizable, and (vi) residual phases. The present study shows that about 63.7% of total chromium is mobilisable, and 36.3% of total chromium is nonbioavailable in soil, whereas about 30.2% of total chromium is mobilisable, and 69.8% of total chromium is non-bioavailable in sludge. In contaminated sites the concentration of chromium was found to be higher in the reducible phase in soils (31.3%) and oxidisable phases in sludge (56.3%) which act as the scavenger of chromium in polluted soils. These results also indicate that iron and manganese rich soil can hold chromium that will be bioavailable to plants and biota. Thus, results of this study can indicate the status of bioavailable of chromium in this area, using sequential extraction technique. So a suitable and proper management of handling tannery sludge in the said area will be urgently needed to the surrounding environment as well as ecosystems.
機(jī)譯：研究了鉻在制革廠廢物傾倒區(qū)周圍的土壤和污泥中的分布和遷移率，以評估其操作形態(tài)的垂直和橫向運(yùn)動，該過程通過六個步驟確定，以將土壤和污泥中的物質(zhì)分餾為（i）水溶性，（ii）可交換，（iii）與碳酸鹽鍵合，（iv）可還原，（v）可氧化和（vi）殘留相。本研究表明，土壤中總鉻的可動量為63.7％，土壤中不可生物利用的鉻總量為36.6％，而污泥中總鉻的可移動性約為30.2％，鉻為非生物可利用性。在受污染的土壤中，可還原相中的鉻含量較高（31.3％），而污泥中的可氧化相含量較高（56.3％），這些污染物可作為污染土壤中鉻的清除劑。這些結(jié)果還表明，富含鐵和錳的土壤可以容納植物和生物群可生物利用的鉻。因此，這項(xiàng)研究的結(jié)果可以表明使用順序提取技術(shù)在該地區(qū)鉻的生物利用度狀態(tài)。因此，迫切需要對周邊地區(qū)以及生態(tài)系統(tǒng)進(jìn)行適當(dāng)，適當(dāng)?shù)奶幚?，以?yīng)對上述地區(qū)的制革廠污泥。

著錄項(xiàng)

相似文獻(xiàn)

  • 外文文獻(xiàn)
  • 中文文獻(xiàn)
  • 專利
代理獲取

客服郵箱：kefu@zhangqiaokeyan.com

京公網(wǎng)安備：11010802029741號 ICP備案號：京ICP備15016152號-6 六維聯(lián)合信息科技 (北京) 有限公司?版權(quán)所有

  • 客服微信

  • 服務(wù)號