325

Geochemistry of mafic rocks and melt inclusions and their implications for the heat source of the 14.0°S hydrothermal field, South Mid-Atlantic Ridge

LI Bing, SHI Xuefa, YANG Yaomin, YE Jun, GAO Jingjing, and ZHENG Wenqin

336

Geochemical characteristics of Holocene sediments from Chuadanga district, Bangladesh: Implications for weathering, climate, redox conditions, provenance and tectonic setting

Ismail Hossain, Krisna Kanta Roy, Pradip Kumar Biswas, Mahbubul Alam, Md. Moniruzzaman, and Farah Deeba

351

Mineral surface modification induced by low energy ion irradiation: Implications for solar-wind exposure effects in lunar soil

ZHU Yongchao, FU Xiaohui, XU Lin, ZHANG Feng, ZHENG Yongchun, and ZOU Yongliao

357

Accumulation and speciation of selenium in Cardamine sp. in Yutangba Se Mining Field, Enshi, China 

SHAO Shuxun, DENG Guodong, MI Xiubo, LONG Shengqiao, ZHANG Jing, and TANG Jun     

365

374

Electrochemical behavior of pyrite in acidic solution with different concentrations of NaCl

LIN Sen, LIU Qingyou, and LI Heping

382

Health risk assessment for typical and abandoned chromium-contaminated sites

DENG Hongyan and CHEN Gangcai

387

Occurrence modes of silver in the Ni-Mo-PGE polymetallic layer of the Lower Cambrian black shales in Zunyi, Guizhou Province, South China

HAN Tao, ZHU Xiaoqing, LIU Shirong, and LI Xiaoxia

393

Study on soil heavy metals contamination of a lead refinery
SHU Yan and ZHAI Shengjia

398

Arsenic distribution and hydrochemical factors in urban groundwater, Foshan City, South China

HUANG Guanxing, CHEN Zongyu, and SUN Jichao

404

Regulation of metallothionein gene expression in response to benzo[a]pyrene exposure and bacterial challenge in marine cultured black porgy (Acanthopagrus schlegelii)

YANG Ming, PAN Chenyuan, BO Jun, and WANG Kejian

411

Geochemical characteristics of Lower Permian coal-measure source rocks in Northeast Ordos Basin

CHENG Xiong and ZHANG Min

419

Enrichment of heavy metals in coal gangue by puff balls and mechanism research

CHEN Miao, ZHU Lijun, WU Yonggui, FU Tianling, and RAN Yan

425

Methane adsorption comparison of different thermal maturity kerogens in shale gas system

HU Haiyan

Identification and geochemical significance of polarized macromolecular compounds in lacustrine and marine oils

CUI Jingwei , ZHU Rukai, and HU Jian 

Research on carbon and oxygen isotopes in phosphorus-bearing rock series of the Late Neoproteroic-Early Cambrian Taozichong Formation in Qingzhen City, Guizhou Province, Southwest China

MAO Tie, YANG Ruidong, MAO Jiaren, YE Chun, LIU Kun, and GAO Junbo

Study on the geological conditions of metallogenesis of the Shazi large-scale anatase deposit in Qinglong County, Guizhou Province

ZHANG Min, NIE Aiguo, XIE Fei, and ZHANG Zhuru