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Vol. 40, No.3 June 2021 TEXT SIZE: A A A

 

ACTA GEOCHIMICA 

(Vol. 40, No.3 2021)
   

 
  

 

ORIGINAL ARTICLES 

271

Validating the deep time carbonate carbon isotope records: effect of benthic flux on seafloor carbonate
Weiming Ding · Ting Nie · Yongbo Peng · Yuanlin Sun · Jinzhuang Xue · Bing Shen

287

Petrology and geochemical framework of dolerites dykes of Temté, North Cameroon, Central Africa
M.Mey Atour · J.M. Bardintzeff · A.Fagny Mefi re · O.F. Nkouandou · R. Tchameni · A. Dinamou

300 

Interaction of Ca2+ and soil humic acid characterized by a joint experimental platform of potentiometric titration, UV–visible spectroscopy, and fluorescence spectroscopy
Haiming Tang · Baohua Xiao · Peiwen Xiao

312

Trace and rare earth element geochemistry of the black and grey shales of the Calabar Flank, Southeastern Nigeria: constraints on the depositional environment and the degree of metal enrichment
Christopher Iorfa Adamu · Benjamin Odey Omang · Oluwaseye Peter Oyetade · Otu Johnson · Therese Ntonzi Nganje

325

Geochronological and geochemical comparison of Precambrian meta-mafic volcanics in Zhongtiaoshan and Lüliangshan Regions in Shanxi, North China Craton
Baishun Shi · Jianzhong Liu · Yongquan Li · Kai Zhu · Li Zhang · Junhao Hu · Jingwen Liu

348

Mineralogy and geochemistry of sands of the lower course of the Sanaga River, Cameroon: implications for weathering, provenance, and tectonic setting
Marie Thérèse Nanga Bineli · Vincent Laurent Onana · Sylvie Désirée Noa Tang · Yves Robert Bikoy · Georges Emmanuel Ekodeck

366

Episodic crustal growth and reworking at the southeastern margin of the North China Craton: evidence from zircon U–Pb and Lu–Hf isotopes of Archean tonalite–trondhjemite–granodiorite gneisses in the Bengbu-Wuhe area
Jianjun Wan · Andong Wang · Jiayong Pan · Chengdong Liu · Yan Zhao · Zhengbing Zhou · Xiandong Luo

390

Spatial prediction and modeling of soil salinity using simple cokriging, artificial neural networks, and support vector machines in El Outaya plain, Biskra, southeastern Algeria
Samir Boudibi · Bachir Sakaa · Zineeddine Benguega · Haroun Fadlaoui · Tarek Othman · Narimen Bouzidi

409

Adsorption removal of roxarsone, arsenite(III), and arsenate(V) using iron-modified sorghum straw biochar and its kinetics
Shuyan Zang · Yingying Zuo · Juan Wang · Xiuming Liu · Mario Alberto Gomez · Lan Wei

419

Evaluation of groundwater quality using pollution index of groundwater (PIG) and non-carcinogenic health risk assessment in part of the Gangetic Basin
Apoorv Verma · N.B. Singh

441

Enrichment characteristics and sources of the critical metal yttrium in Zhijin rare earth-containing phosphorites, Guizhou Province, China
Xingxiang Gong · Shengwei Wu · Yong Xia · Zhengwei Zhang · Shan He · Zhuojun Xie · Jiafei Xiao · Haiying Yang · Qingping Tan · Yi Huang · Yuhong Yang

 

 SHORT COMMUNICATION

466 

Heavy metal: a misused term?
Olivier Pourret · Jean-Claude Bollinger · Andrew Hursthouse

 
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