ORIGINAL ARTICLES 

161

High oxygen fugacity magma: implication for the destruction of the North China Craton
Zhekun Zhang · Mingxing Ling · Lipeng Zhang · Saijun Sun · Weidong Sun

172

The effect of pH on the sorption of gold nanoparticles on illite
Yuhong Fu · Quan Wan · Zonghua Qin · Xin Nie · Wenbin Yu · Shanshan Li

181

Methane production from rice straw carbon in five different methanogenic rice soils: rates, quantities and microbial communities
Quan Yuan · Xiaozhen Huang · Junpeng Rui · Shaojun Qiu · Ralf Conrad

192

Optimizing the ratio of the spike to sample for isotope dilution analysis: a case study with selenium isotopes
Decan Tan · Wenpo Xu · Zuochen Zhu · Shehong Li · Guangliang Wu · Haibo Qin

203

Antimony removal from wastewater by sulfate-reducing bacteria in a bench-scale upfl ow anaerobic packed-bed reactor
Jingjing Chen · Guoping Zhang · Chao Ma · Dongli Li

216

Distribution and assessment of hydrogeochemical processes of F-rich groundwater using PCA model: a case study in the Yuncheng Basin, China
Tao Liu · Xubo Gao · Xiaobo Zhang · Chengcheng Li

226

Ecological risk assessment of surfi cial sediment by heavy metals from a submerged archaeology harbor, South Mediterranean Sea, Egypt
Maha Ahmed Mohamed Abdallah · Ahmed Mohamed Badr-ElDin

236

Discrimination geochemical interaction effects on mineralization at the polymetallic Glojeh deposit, NW Iran by interative backward quadratic modeling
Farshad Darabi-Golestan · Ardeshir Hezarkhani

255

Distribution and ecological risks of heavy metals in Lake Hussain Sagar, India
Arulpoomalai Ayyanar · Shashidhar Thatikonda

COMMENT 

271

Statistics matters in interpretations of non-traditional stable isotopic data
Chun-Hui Li

CORRECTION