Fields of work

- Oxygen isotope of different oxianions in geochemistry
- Method development for environmental analysis
- Mobilization of As in groundwater
- Monitoring of water and air pollution

Publications
Author	Title	Source
Guo, H., Zhou, Y., Jia, Y., Tang, X., Li, X., Shen, M., Lu, H., Han, S., Wei, C., Norra, S., Zhang, F.	Sulfur Cycling-Related Biogeochemical Processes of Arsenic Mobilization in the Western Hetao Basin, China: Evidence from Multiple Isotope Approaches	Environ. Sci. Technol. 50, 12650-12659 (2016)
Tang, X., Berner, Z., Norra, S.	Separation of arsenite from other oxyanions in roundwater for the measurement of the isotopic composition of oxygen	Arsen 2011; Verhalten von Arsen in geologischen, hydrologischen und biologischen Systemen. Leipzig 12.-13. September 2011 (2011)
Tang, X., Berner, Z., Norra, S.	Separation of arsenate and phosphate for the measurement of the isotope composition of oxygen in arsenate (poster presentation)	Goldschmidt Conference 2011, Prague. Geochemica et Cosmochemica Acta, Goldschmidt Conference Abstracts pp. 1986 (2011)
Tang, X.	Separating arsenic oxyanions from natural waters for oxygen isotope analysis	Dissertation, Karlsruher Mineralogische und Geochemische Hefte / Band 40 (2013)
Tang, X.,Berner, Z.,Nalcaci, O.O., Norra, S.	Selective separation and preconcentration of arsenite from arsenic enriched natural waters with three different adsorbents	Separation Science and Technology, http://dx.doi.org/10.1080/01496395.2015.1040124 (2015)
Tang, X., Berner, Z., Khelashvilli, P., Norra, S.	Preparative separation of arsenate from phosphate by IRA-400 (OH) for oxygen isotopic work	Talanta, Vol. 105, 46-51 (2013)
Tang, X., Berner, Z., Norra, S., Vennemann, T.W.	Method development for the determination of d18O values in Arsenic oxyanios in natural waters	10th International Symposium on Applied Isotope Geochemistry, 22 – 27 September 2013, Budapest (2013)
Neidhardt, H., Norra, S., Tang, X., Guo, H., Stüben, D.	Impact of irrigation with high arsenic burdened groundwater on the soil-plant system: Results from a case study in the Inner Mongolia, China	Environmental Pollution 163, 8-13 (2012)
Guo, H., Zhang, B., Li, A., Berner, Z., Tang, X., Norra, S., Stüben, D.	Hydrogeological and biogeochemical constrains of arsenic mobilization in shallow aquifers from the Hetao basin, Inner Mongolia	Environmental Pollution 159, 876-883 (2011)
Guo, H., Shen, Z., Zhang, B., Li Y., Wang, G., Berner, Z., Tang X., Norra, S.	Geochemical and hydrological controls of As distribution in shallow groundwaters from the Hetao Basin, Inner Mongolia, China	In: P. Birkle and I.S. Torres-Alvarado (eds.) Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13, Guanajuato, Mexico, 16-20 August 2010. Balkema, CRC Press Taylor& Francis Group, pp. 383-386 (2010)
Guo, H.; Zhang, Y.; Jia, Y.; Zhao, K.; Li, Y.; Tang, X.	Dynamic behaviors of water levels and arsenic concentration in shallow groundwater from Hetao Basin, Inner Mongolia.	Journal of Geochemical Exploration 135, 130-140 (2013)
Norra, S., Berner, Z., Boie, I., Eiche, E., Kellermeier, E.C., Kiczka, M., Kramar, U., Neidhardt, H., Agarwala., P., Chandrasekharam., D., Rout, R., Guo, H., Tang., X., Lan, V.T.M., Trang, P.T.K., Viet, P.H.	Arsenic – from groundwater into soils, plants and the food chain. Complementary case studies from West Bengal, Inner Mongolia and Red River Delta	Arsenic 2012, 23-27.07. 2012, Cairns, Australia (2012)
Norra, S., Berner, Z., Boie, I., Eiche, E., Kellermeier, E.C., Kizcka, M., Kramar, U., Neidhardt, H., Agarwala, P., Chandrasekharam, D., Rout, R., Guo, H., Tang, X., Lan, V.T.M., Trang, P.T.K., Viet, P.H.	Arsenic from groundwater into soils, plants and the food chain: Complementary case studies from West Bengal, Inner Mongolia and the Red River Delta, Vietnam	Understanding the Geological and Medical Interface of Arsenic, As 2012 - 4th International Congress: Arsenic in the Environment, 246-248 (2012)