ORIGINAL ARTICLES 

473

Variations of methane stable isotopic values from an Alpine peatland on the eastern Qinghai-Tibetan Plateau
Qian Guo · Haijun Peng · Bing Hong · Hu Yao · Yongxuan Zhu · Hanwei Ding · Ning An · Yetang Hong

484

Quantifying aluminosilicate manganese release and dissolution rates across organic ligand treatments for rocks, minerals, and soils
Justin B. Richardson · LeAnn X. Zuñiga

498

Concentration determination of gold nanoparticles by flame atomic absorption spectrophotometry
Yuhong Fu · Quan Wan · Zonghua Qin · Shanshan Li · Sen Li · Ji Wang · Wei Zhang

507

Evaluating soil erosion by water in a small alpine catchment in Northern Italy: comparison of empirical models
Francesca Berteni · Stefano Barontini · Giovanna Grossi

525

Pressure calibration and sound velocity measurement to 12 GPa in multi-anvil apparatus
Wei Song · Shuangming Shan · Qizhe Tang · Chang Su · Yonggang Liu

532

Olivine and Cr-spinel as indicators of the petrogenesis and partial melting conditions of the high-MgO ultramafic volcanic rocks from NW Ad Dhala Province—Yemen
Mukhtar A. Nasher · Murad Ali

557

Zinc, copper, and strontium isotopic variability in the Baiyangping Cu–Pb–Zn–Ag polymetallic ore field, Lanping Basin, Southwest China
Caixia Feng · Shen Liu · Guoxiang Chi · Xianwu Bi · Ruizhong Hu · Ian M. Coulson

575

Geochemistry and spectrometric prospection of younger granites and granitic pegmatites bearing uranium mineralization at G. Kab El Rakeb area, Central Eastern Desert, Egypt
Gehad M. Saleh · Bahaa M. Emad · Ibrahim B. Abdel Kader

602

Carboniferous tectono-magmatic evolution of the northern Luliang arc: evidence from geochemistry and petrography of Carboniferous volcanic rocks in the northern Luliang Uplift, NW China
Sijie Han · Shuxun Sang · Wenfeng Wang · Jinchao Zhang · Guanlong Zhang

623

Geochemical constraints and uranium potential of the younger granitic rocks in El Maghrbia area, Central Eastern Desert, Egypt
A.E. El-Kammar · A.H. El-Afandy · T. Nasr · M. Coltorti · F. Casetta

640

Coupling effects of hydrological characteristics and nutrient load in sediments on the trophic state of reservoirs
Fan Xinyi · Yue Yihong · Mei Lin · Li Xiaoying · Hu Zhehui · Luo Jiajie · Liu Liu · Wang Fushun

 SHORT COMMUNICATION 

650

Is bicarbonate directly used as substrate to participate in photosynthetic oxygen evolution
Yanyou Wu