SORPTION OF NONIONIC ORGANIC-COMPOUNDS IN SOIL-WATER SYSTEMS CONTAINING A MICELLE-FORMING SURFACTANT

被引:157
作者
SUN, SB
INSKEEP, WP
BOYD, SA
机构
[1] MONTANA STATE UNIV,DEPT PLANT SOIL & ENVIRONM SCI,BOZEMAN,MT 59717
[2] MICHIGAN STATE UNIV,DEPT CROP & SOIL SCI,E LANSING,MI 48824
关键词
D O I
10.1021/es00004a010
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, we examined the effect of a micelle-forming surfactant (Triton X-100) an the sorption of 1,1-bis(p-chlorophenyl)-2,2,2-trichlororethane (p,p'-DDT), 2,2',4,4',5,5'-hexachlorobiphenyl (2,2',4,4',5,5'-PCB), and 1,2,4-trichlorobenzene (1,2,4-TCB) in a soil-water system. At aqueous phase Triton X-100 concentrations (C-TX) below 200 mg L(-1) (approximately the critical micelle concentration, cmc, for Triton X-100), apparent soil-water distribution coefficients (K*) for each compound studied increased with increasing C-TX. At C-TX values above 200 mg L(-1), K* values decreased with increasing C-TX. Below the cmc, surfactant monomers in the aqueous phase are relatively ineffective as a partitioning medium for nonionic organic compounds (NOCs), while the sorbed surfactant molecules increase the sorptive capacity of the solid phase. Above the cmc, however, surfactant micelles in the aqueous phase begin to compete with the sorbed surfactant as an effective partitioning medium for the poorly water-soluble NOCs (e.g., p,p'-DDT), resulting in a 10-fold decrease in K* at a C-TX of about 600 mg L(-1). Two conceptual models were developed, which adequately described the functional dependence of K* an C-TX.
引用
收藏
页码:903 / 913
页数:11
相关论文
共 15 条
[1]   RESIDUAL PETROLEUM AND POLYCHLOROBIPHENYL OILS AS SORPTIVE PHASES FOR ORGANIC CONTAMINANTS IN SOILS [J].
BOYD, SA ;
SUN, S .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1990, 24 (01) :142-144
[2]   PHYSICAL CONCEPT OF SOIL-WATER EQUILIBRIA FOR NON-IONIC ORGANIC-COMPOUNDS [J].
CHIOU, CT ;
PETERS, LJ ;
FREED, VH .
SCIENCE, 1979, 206 (4420) :831-832
[3]   PARTITION EQUILIBRIA OF NON-IONIC ORGANIC-COMPOUNDS BETWEEN SOIL ORGANIC-MATTER AND WATER [J].
CHIOU, CT ;
PORTER, PE ;
SCHMEDDING, DW .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1983, 17 (04) :227-231
[4]   PARTITION-COEFFICIENT AND BIOACCUMULATION OF SELECTED ORGANIC CHEMICALS [J].
CHIOU, CT ;
FREED, VH ;
SCHMEDDING, DW ;
KOHNERT, RL .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1977, 11 (05) :475-478
[5]  
CHIOU CT, 1989, SSSA SPECIAL PUBLICA, P25
[6]   SOLUBILIZATION OF POLYCYCLIC AROMATIC-HYDROCARBONS IN MICELLAR NONIONIC SURFACTANT SOLUTIONS [J].
EDWARDS, DA ;
LUTHY, RG ;
LIU, ZB .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (01) :127-133
[7]  
GU T, 1992, PROG COLL POL SCI S, V88, P74
[8]   SEDIMENT-SOIL-ASSOCIATED AND SATURATED-SOIL-ASSOCIATED REACTIONS INVOLVING AN ANIONIC SURFACTANT (DODECYL-SULFATE) .2. PARTITION OF PAH COMPOUNDS AMONG PHASES [J].
JAFVERT, CT .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (06) :1039-1045
[9]   SORPTION OF HYDROPHOBIC POLLUTANTS ON NATURAL SEDIMENTS [J].
KARICKHOFF, SW ;
BROWN, DS ;
SCOTT, TA .
WATER RESEARCH, 1979, 13 (03) :241-248
[10]   WATER SOLUBILITY ENHANCEMENTS OF DDT AND TRICHLOROBENZENE BY SOME SURFACTANTS BELOW AND ABOVE THE CRITICAL MICELLE CONCENTRATION [J].
KILE, DE ;
CHIOU, CT .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1989, 23 (07) :832-838