One-step enrichment and chemiluminescence detection of sodium dodecyl benzene sulfonate in river water using Mg-Al-carbonate layered double hydroxides.
In this work, Mg-Al CO3-layered double hydroxides (LDHs) were used as adsorbent materials for sodium dodecyl benzene sulfonate (SDBS) in aqueous solutions, the enriched SDBS can be directly detected by IO4(-)-H2O2 chemiluminescence (CL) system. The commonly existing cations cannot be enriched by Mg-Al CO3-LDHs due to the structurally positively charged layers of LDHs, while other adsorbed anionic interferents had no effect on the IO4(-)-H2O2 CL reaction. The corresponding linear regression equation was established in the range of 0.1-10 μM for SDBS. The detection limit at a signal-to-noise (S/N) ratio of 3 for SDBS was 0.08 μM. The relative standard deviation (RSD) for nine repeated measurements of 0.5 μM SDBS was 2.6%. This proposed method has been successfully applied to the determination of SDBS in river water samples. To the best of our knowledge, we have first time coupled the high enrichment capacity of LDHs towards anions with CL detection for analytes.
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Weijiang
W
Guan
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Wenjuan
W
Zhou
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Dongmei
D
Han
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Mengchun
M
Zhang
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: luchao@mail.buct.edu.cn.
Chao
C
Lu
Department of Chemistry, Tsinghua University, Beijing 100084, China.
Jin-Ming
JM
Lin
D000327:Adsorption; D000535:Aluminum / Q000737:chemistry*; D001557:Benzenesulfonates / Q000032:analysis*; D002254:Carbonates / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006878:Hydroxides / Q000737:chemistry*; D057230:Limit of Detection; D049449:Luminescence; D008163:Luminescent Measurements / Q000379:methods*; D008274:Magnesium / Q000737:chemistry*; D045483:Rivers / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D001557:Benzenesulfonates; D002254:Carbonates; D006878:Hydroxides; D014874:Water Pollutants, Chemical; C001114:dodecylbenzenesulfonic acid; D006861:Hydrogen Peroxide; D000535:Aluminum; D008274:Magnesium
Chemiluminescence; Enrichment; Layered double hydroxides; Sodium dodecyl benzene sulfonate