西北师范大学学报（自然科学版）
西北師範大學學報（自然科學版）
서북사범대학학보（자연과학판）
Journal of Northwest Normal University (Natural Science)
2015年
6期
71-77
,共7页
刘世科%刘锐龙%辛佳%刘翔
劉世科%劉銳龍%辛佳%劉翔
류세과%류예룡%신가%류상
生物质炭%2 ,2′,4 ,4′-四溴联苯醚(BD E-47 )%土壤%吸附%解吸
生物質炭%2 ,2′,4 ,4′-四溴聯苯醚(BD E-47 )%土壤%吸附%解吸
생물질탄%2 ,2′,4 ,4′-사추련분미(BD E-47 )%토양%흡부%해흡
bio-char(BC)%2,2′,4,4′-tetrabromodiphenyl ether (BDE-47)%soil%sorption%desorption
研究了人工制备的生物质炭分别添加到模拟土壤和天然土壤后，对2，2′，4，4′‐四溴联苯醚（BDE‐47）在土壤中吸附和解吸行为的变化．结果表明，在模拟土壤中添加土重1％的生物质炭后，土壤对BDE‐47的吸附能力显著增强，土壤的单点分配系数 Kd 提高了32％～46％，吸附行为的非线性程度有轻微的增加，非线性指数 n值由0.49降低到0.43；1％的生物质炭添加到天然土壤后，土壤对BDE‐47的吸附能力和BDE‐47的解吸滞后性显著增强，土壤的单点分配系数 Kd 提高到原土壤的1.44～1.68倍，BDE‐47的解吸滞后性指数 IH 由0～0.17提高到0.32～1.08．生物质炭和土壤的相互作用对BD E‐47在土壤中的吸附行为的影响可能同时具有抑制作用和促进作用，在低浓度下促进作用占主导，在高浓度下抑制作用占主导．
研究瞭人工製備的生物質炭分彆添加到模擬土壤和天然土壤後，對2，2′，4，4′‐四溴聯苯醚（BDE‐47）在土壤中吸附和解吸行為的變化．結果錶明，在模擬土壤中添加土重1％的生物質炭後，土壤對BDE‐47的吸附能力顯著增彊，土壤的單點分配繫數 Kd 提高瞭32％～46％，吸附行為的非線性程度有輕微的增加，非線性指數 n值由0.49降低到0.43；1％的生物質炭添加到天然土壤後，土壤對BDE‐47的吸附能力和BDE‐47的解吸滯後性顯著增彊，土壤的單點分配繫數 Kd 提高到原土壤的1.44～1.68倍，BDE‐47的解吸滯後性指數 IH 由0～0.17提高到0.32～1.08．生物質炭和土壤的相互作用對BD E‐47在土壤中的吸附行為的影響可能同時具有抑製作用和促進作用，在低濃度下促進作用佔主導，在高濃度下抑製作用佔主導．
연구료인공제비적생물질탄분별첨가도모의토양화천연토양후，대2，2′，4，4′‐사추련분미（BDE‐47）재토양중흡부화해흡행위적변화．결과표명，재모의토양중첨가토중1％적생물질탄후，토양대BDE‐47적흡부능력현저증강，토양적단점분배계수 Kd 제고료32％～46％，흡부행위적비선성정도유경미적증가，비선성지수 n치유0.49강저도0.43；1％적생물질탄첨가도천연토양후，토양대BDE‐47적흡부능력화BDE‐47적해흡체후성현저증강，토양적단점분배계수 Kd 제고도원토양적1.44～1.68배，BDE‐47적해흡체후성지수 IH 유0～0.17제고도0.32～1.08．생물질탄화토양적상호작용대BD E‐47재토양중적흡부행위적영향가능동시구유억제작용화촉진작용，재저농도하촉진작용점주도，재고농도하억제작용점주도．
T he changes of the sorption and desorption behaviors of 2 ,2′,4 ,4′‐tetrabromodiphenyl ether (BDE‐47) in the soil is studied w hen the artificial bio‐char is added into the artificial soil and natural soil , respectively . The results show that the sorption capability of BDE‐47 in the artificial soil is obviously improved when the bio‐char is added into the artificial soil at 1% amount of the soil weight . The soil single point distribution coefficient Kd is increased by 32% ~46% , and the sorption behavior of nonlinear degree is enhanced slightly with nonlinear index n down from 0.49 to 0.43 . When bio‐char is added into the natural soil at 1% amount in weight , the sorption capability and desorption hysteresis of BDE‐47 onto the natural soil are significantly enhanced , and the natural soil single point distribution coefficient Kd is increased by 3.13~1.68 times with the increasing of desorption hysteresis index from 0~0.17 to 0.32~1.08 . Through further analysis ,it is showed that the interaction between bio‐char and soil might lead to both inhibitory and promoting action on BDE‐47 sorption behaviors , w hile promoting effects dominates at a lower concentration and inhibitory effects at a higher concentration .
