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Urs Jans

Urs Jans

Chemistry

Environmental organic chemistry


Email:
Office Phone: (212) 650-8369

Biography:

Research

My research program at CCNY is addressing questions concerning aquatic environmental organic chemistry, with a focus on the mechanisms through which organic contaminants undergo abiotic transformations in natural aquatic environment (freshwater, groundwater, seawater). A special interest lies in the role of reduced sulfur species and their reaction with organic contaminants. The formation of these reduced sulfur species shall be studied as well.

Publications

G. F. Talu, V. Diyamandoglu, U. Jans, 2007. Oxalate ion decomposition under UV light from low pressure mercury vapor lamps. Ozone: Science and Engineering, 29, 473-483.

L. Yang, X. Li, J. Cursius, U. Jans, M. E. Melcer, P. Zhang, 2007. Persistent chlordane concentrations in Long Island Sound sediment: Implications for chlordane, 210Pb, and 137Cs depth profiles. Environ. Sci. Technol. 41, 7723-7729.

Q. Gan, U. Jans, 2007. Nucleophilic reaction of phorate and terbufos with reduced sulfur species under anoxic conditions. Journal of Agricultural and Food Chemistry, 55, 3546-3554.

X. Li, L. Yang, U. Jans, M.E. Melcer, P. Zhang, 2007. Lack of enantioselective microbial degradation of chlordane in Long Island Sound Sediment. Environ. Sci. Technol., 41, 1635-1640.

Q. Gan, R.M. Singh, T. Wu, U. Jans, 2006. Kinetics and mechanism of degradation of dichlorvos in aqueous solution containing reduced sulfur species. Environ. Sci. Technol., v. 40, 5717-5723.

T. Wu, Q. Gan, U. Jans, 2006. Nucleophilic substitution of phosphorothionate ester pesticides with bisulfide (HS-) and polysulfides (Sn2-), Environ. Sci. Technol. v. 40, 5428-5434

Q. Gan, U. Jans. Reaction of thiometon and disulfoton with reduced sulfur species in simulated natural environment, 2006. J. Agric. Food Chem., v. 54, 7753-7760.

X. Guo; U. Jans, 2006. Kinetics and mechanism of the degradation of methyl parathion in aqueous hydrogen sulfide solution: Investigation of natural organic matter effects. Environ. Sci. Technol., v. 40, 900-906

T. Wu, U. Jans, 2006. Nucleophilic substitution reactions of chlorpyrifos-methyl with sulfur species. Environ. Sci. Technol., v. 40, 784-790.

Q. Gan, R.M. Singh, U. Jans, 2006. Degradation of naled and dichlorovos promoted by reduced sulfur species in well-defined anoxic aqueous solutions. Environ. Sci. Technol., v. 40, 778-783.

U. Jans, M. Hasan Miah, 2003, Reaction of Chlorpyrifos-methyl in Aqueous Hydrogen Sulfide/Bisulfide Solutions, J. Agric. Food Chem. v. 51, pp. 1956-1960.

L. A. Totten, U. Jans, A. L. Roberts, 2001. Alkyl bromides as mechanistic probes of reductive dehalogenation: Reduction of vicinal dibromide stereoisomeres with zero-valent metals. Environ. Sci. Technol., v. 35, pp. 2268-2274.

U. Jans, J. Hoigne, 2000. Atmospheric water: transformation of ozone into OH-radicals by sensitized photoreactions or particulate carbon. Atmos. Environ., v.35, pp. 1069-1085

U. Jans, J. Hoigne, 1998. Activated carbon and carbon black catalyzed transformation of aqueous ozone into OH-radicals. Ozone: Science and Engineering, v. 20, pp. 67-90.

S. Canonica, U. Jans, K. Stemmler, J. Hoigne, 1995. Transformation kinetics of phenols in water: photosensitization by dissolved natural organic material and aromatic ketones. Environ. Sci. Technol., v. 29, pp. 1822-1831.

Departments:

Chemistry & Biochemistry:
Associate Professor