Optical properties of chromophoric dissolved organic matter (CDOM) in surface and pore waters adjacent to an oil well in a southern California salt marsh

被引：18

作者：

Bowen, Jennifer C. ^{[1
]}

Clark, Catherine D. ^{[1
,2
]}

Keller, Jason K. ^{[1
]}

De Bruyn, Warren J. ^{[1
]}

机构：

[1] Chapman Univ, Schmid Coll Sci & Technol, One Univ Dr, Orange, CA 98266 USA

[2] Western Washington Univ, Coll Sci & Engn, 516 High St, Bellingham, WA 98229 USA

来源：

MARINE POLLUTION BULLETIN | 2017年 / 114卷 / 01期

基金：

美国国家科学基金会;

关键词：

Salt marsh; CDOM; Optical properties; EEMS; Oil; APPARENT QUANTUM YIELD; FLUORESCENCE SPECTROSCOPY; MOLECULAR-WEIGHT; COASTAL; ABSORPTION; WETLAND; MARINE; TERRESTRIAL; ESTUARY; DOC;

D O I：

10.1016/j.marpolbul.2016.08.071

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Chromophoric dissolved organic matter (CDOM) optical properties were measured in surface and pore waters as a function of depth and distance from an oil well in a southern California salt marsh. Higher fluorescence and absorbances in pore vs. surface waters suggest soil pore water is a reservoir of CDOM in the marsh. Protein-like fluorophores in pore waters at distinct depths corresponded to variations in sulfate depletion and Fe(II) concentrations from anaerobic microbial activity. These variations were supported by fluorescence indexes and are consistent with differences in optical molecular weight and aromaticity indicators. Fluorescence indices were consistent with autochthonous material of aquatic origin in surface waters, with more terrestrial, humified allochthonous material in deeper pore waters. CDOM optical properties were consistent with significantly enhanced microbial activity in regions closest to the oil well, along with a three-dimensional excitation/emission matrix fluorescence spectrum peak attributable to oil, suggesting anaerobic microbial degradation of oil. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：157 / 168

页数：12

共 62 条

[1]

[Anonymous], 1998, AQUATIC HUMIC SUBSTA

[2] Optical properties of low molecular weight and colloidal organic matter: Application of the ultrafiltration permeation model to DOM absorption and fluorescence [J].

Belzile, C ;

Guo, LD .

MARINE CHEMISTRY, 2006, 98 (2-4) :183-196

[3]

Bianchi T.S., 2006, BIOGEOCHEMISTRY ESTU

[4] Changes in CDOM fluorescence from allochthonous and autochthonous sources during tidal mixing and bacterial degradation in two coastal estuaries [J].

Boyd, TJ ;

Osburn, CL .

MARINE CHEMISTRY, 2004, 89 (1-4) :189-210

[5] Application of ultraviolet fluorometry and excitation-emission matrix spectroscopy (EEMS) to fingerprint oil and chemically dispersed oil in seawater [J].

Bugden, J. B. C. ;

Yeung, C. W. ;

Kepkay, P. E. ;

Lee, K. .

MARINE POLLUTION BULLETIN, 2008, 56 (04) :677-685

[6] Fluorescent dissolved organic matter in marine sediment pore waters [J].

Burdige, DJ ;

Kline, SW ;

Chen, WH .

MARINE CHEMISTRY, 2004, 89 (1-4) :289-311

[7] Global carbon sequestration in tidal, saline wetland soils [J].

Chmura, GL ;

Anisfeld, SC ;

Cahoon, DR ;

Lynch, JC .

GLOBAL BIOGEOCHEMICAL CYCLES, 2003, 17 (04)

[8] Salt marshes as a source of chromophoric dissolved organic matter (CDOM) to Southern California coastal waters [J].

Clark, Catherine D. ;

Litz, Liannea P. ;

Grant, Stanley B. .

LIMNOLOGY AND OCEANOGRAPHY, 2008, 53 (05) :1923-1933

[9] Optical characterization and distribution of chromophoric dissolved organic matter (CDOM) in soil porewater from a salt marsh ecosystem [J].

Clark, Catherine D. ;

Aiona, Paige ;

Keller, Jason K. ;

De Bruyn, Warren J. .

MARINE ECOLOGY PROGRESS SERIES, 2014, 516 :71-83

[10] Marine optical biogeochemistry: The chemistry of ocean color [J].

Coble, Paula G. .

CHEMICAL REVIEWS, 2007, 107 (02) :402-418

← 1 2 3 4 5 6 7 →