scholarly journals Association of Rare Earth Elements with Passive Smoking among Housewives in Shanxi Province, China

2022 ◽  
Vol 19 (1) ◽  
pp. 559
Author(s):  
Jigen Na ◽  
Huiting Chen ◽  
Hang An ◽  
Nan Li ◽  
Lailai Yan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Rural Areas ◽  
Passive Smoking ◽  
Emerging Contaminants ◽  
Linear Trend ◽  
Northern China ◽  
Shanxi Province ◽  
Exposure Effect ◽  
Kernel Machine

Background: Rare earth elements (REEs) are emerging contaminants. Previous studies reported the association between REEs and active smoking, but little is known about the effects of passive smoking on this condition. In China, female passive smoking is widespread, particularly in rural areas. Objective: This study aimed to estimate the relationship between REEs accumulation and passive smoking among rural housewives. Methods: We recruited 385 subjects in Shanxi Province of northern China, of whom 117 housewives were exposed to passive smoking, and 268 were not. We analyzed 15 REEs in the hair of housewives with ICP–MS, including lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium. Results: The results indicated higher levels of 14 REEs except for Sm in both the univariate and adjusted models among the housewives exposed to passive smoking. The increasing linear trend of adjusted odds ratios of 15 REEs supported their association. The Bayesian kernel machine regression (BKMR) models showed that 15 REEs had a significant overall effect, and Eu had a single-exposure effect with passive smoking. Conclusion: We concluded that passive smoking might be associated with increased exposure to REEs among rural housewives.

Climate-Controlled Biogeochemical Cycle of Rare Earth Elements in Soil Of Northern China

2021 ◽  
Author(s):  
Yi-Wen Cao ◽  
Xiao-Ming Liu ◽  
Chao Wang ◽  
Edith Bai ◽  
Nanping Wu
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Northern China ◽  
Biogeochemical Cycle

Abundance and Geological Implication of Rare Earth Elements and Yttrium in Coals from the Suhaitu Mine, Wuda Coalfield, Northern China

2014 ◽  
Vol 32 (5) ◽  
pp. 873-889 ◽  
Author(s):  
Jian Kang ◽  
Lei Zhao ◽  
Xibo Wang ◽  
Weijiao Song ◽  
Peipei Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Northern China ◽  
Geological Implication

scholarly journals Epidemiological Analysis of 1234 Cases of Laryngeal Cancer in Shanxi Province, China

2021 ◽  
Vol 28 ◽  
pp. 107327482110412
Author(s):  
Hui Qi ◽  
Wenjie Chen ◽  
Chunming Zhang ◽  
Xiwang Zheng ◽  
Chen Peng ◽  
...  
Keyword(s):  
Incidence Rate ◽  
Laryngeal Cancer ◽  
Rural Areas ◽  
Urban Areas ◽  
Northern China ◽  
Shanxi Province ◽  
World Population ◽  
Drinking Status ◽  
Epidemiological Characteristics ◽  
The City

Background Laryngeal cancer is a common malignancy of the head and neck, especially in northern China, including Shanxi province. This study intends to describe the epidemiological characteristics of laryngeal cancer in Shanxi Province, China, in order to support prevention and treatment efforts. Methods Retrospective analysis of the medical records of patients diagnosed with laryngeal cancer in hospitals in Shanxi Province from 2008 to 2012. Results The average annual incidence rate of laryngeal cancer in Shanxi province from 2008 to 2012 was 0.70/105, the Chinese population standardized incidence rate was 0.57/105 and the world population standardized incidence rate was 0.60/105. The city with the highest incidence of laryngeal cancer in Shanxi Province is Taiyuan, followed by Yangquan, and the lowest incidence are Yuncheng and Jincheng. The cases included 723 farmers (58.6%), 338 workers (27.4%), 95 government cadres (7.7%), 35 unemployed individuals (2.8%), 30 teachers (2.4%) and 13 individuals with other occupations (1.1%). The incidence of laryngeal cancer in rural areas was 0.78/105, while urban areas was 0.60/105. Of 1006 patients with smoking and drinking status reported, there were 238 both smoking and drinking (23.7%), 491 only smoking but not drinking (48.8%), 4 only drinking but not smoking (0.4%), 273 both not smoking and not drinking (27.1%) (P<0.001), and there were 695 males smoking (95.3%), 34 females smoking (4.7%) (P<0.001). Of 879 patients for whom the primary cancer location was known, 406 cases (46.2%) were supraglottic and 428 cases (48.7%) were glottic. Among 1009 patients with known pathological classification, the vast majority had squamous cell carcinoma (992 cases, 98.3%). Conclusions To sum up, the incidence of laryngeal cancer in Shanxi Province exhibited a relatively stable trend from 2008 to 2012, and the incidence is higher in men than in women in all years. The high percentage of smokers in this study underscores the importance of smoking as a risk factor for laryngeal cancer, whereas rates of drinking did not appear to be linked. Incidence of laryngeal cancer was higher in rural areas than in urban areas, a pattern that differs from other regions of China and internationally.

Abundance of Rare Earth Elements and Yttrium in Coals from the Guanbanwusu Mine, Jungar Coalfield, Northern China, and their Geological Implication

2014 ◽  
Vol 962-965 ◽  
pp. 152-155
Author(s):  
Jian Kang ◽  
Zhi Juan Kang ◽  
Hai Yue Shan
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Inductively Coupled Plasma ◽  
Vitrinite Reflectance ◽  
Northern China ◽  
Distribution Patterns ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Chinese Coal ◽  
Jungar Coalfield

Inductively coupled plasma mass spectrometry (ICP-MS) was used to determine the concentrations of rare earth elements and yttrium (REY) in coal and associated rock samples from the Guanbanwusu Mine, Jungar Coalfield, Northern China. The Guanbanwusu coals have a similar vitrinite reflectance and sulfur content, and a slightly higher ash yield. The concentration of REY (from La to Lu plus Y) in the 6 coal of the Guanbanwusu Mine varies from 72 μg/g to 396 μg/g and averages 186 μg/g, higher than that in normal Chinese coal (136 μg/g) and much higher than that in average world hard coals. The H-type distribution patterns in the No. 6 coal (W9-2 and W9-9) were probably caused by stronger water influences than those in the other coalfield. The coal bench (W2 and W9) with L-type is because terrigenous input influence.

scholarly journals Role of Manganese Oxyhydroxides in the Transport of Rare Earth Elements Along a Groundwater Flow Path

2019 ◽  
Vol 16 (13) ◽  
pp. 2263 ◽  
Author(s):  
Liu ◽  
Guo ◽  
Pourret ◽  
Chen ◽  
Yuan
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Emerging Contaminants ◽  
Shallow Groundwater ◽  
Flow Path ◽  
Solution Ph ◽  
Study Approach ◽  
The North ◽  
Mn Concentration

Rare earth elements (REE) are known to be emerging contaminants in hydrosphere, but roles of hydrous manganese oxyhydroxides (HMO) in REE transport in groundwater remains unknown. In this study, groundwater was sampled along a flow path in the North China Plain to determine the behavior of REE surface complexation to HMO by a modeling and field study approach. Results show that the proportion of neodymium (Nd) complexed by HMO ranges from 0.2% to 95.8%, and from 0.3% to 99.6% in shallow groundwater and deep groundwater, respectively. The amount of complexed REE increases along the flow path. REE bound to HMO exhibit decreasing trends with increasing atomic number. The process was determined to be independent of pH, HMO content, and metal loading. This finding further demonstrates HMO-REE complexation plays a key role in transport of REE in groundwater through preferential scavenging of light REE (LREE) over heavy REE (HREE). Nevertheless, carbonate ligands appear to be robust competitors in reducing the amount of REE sorbed to HMO when solution pH rises above 8.0. Assuming that 50% of Mn concentration occurs as HMO, the amount of complexed REE was predicted to show a more marked decrease in LREE compared to that of HREE.

scholarly journals Identification of new hardy ferns that preferentially accumulate light rare earth elements: a conserved trait within fern species

2020 ◽  
Vol 17 (2) ◽  
pp. 191 ◽  
Author(s):  
Nicolas Grosjean ◽  
Damien Blaudez ◽  
Michel Chalot ◽  
Elisabeth Maria Gross ◽  
Marie Le Jean
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Emerging Contaminants ◽  
New Technologies ◽  
Atomic Mass ◽  
Light Rare Earth ◽  
Fern Species ◽  
Increasing Demand ◽  
Light Rare Earth Elements ◽  
Transfer Mechanisms

Environmental contextRare earth elements (REEs) are strategic metals and emerging contaminants for which plant-based remediation measures are needed. We screened a collection of hardy ferns and identified new accumulator species that preferentially transferred light REEs to their fronds. This study is an important step towards understanding the mechanisms of REE accumulation in plants. AbstractRare earth elements (REEs) include the lanthanides plus yttrium and scandium, and can be split according to their atomic mass into light (LREEs) and heavy REEs (HREEs). The increasing demand for REEs is mainly driven by new technologies, and their current low recyclability has led them to become emerging contaminants. The identification of new REE accumulators may help in determining the REE transfer mechanisms and may result in interesting candidates for phytoremediation techniques. To that end, a collection of 49 hardy fern species, grown in REE-spiked substrate, were screened for their potential in REE accumulation. REE concentrations were very low in the fronds of all Polypodium species, whereas all Athyrium species highly accumulated REEs. The REE accumulation level was more variable among the different species of Dryopteris, Blechnum, Woodwardia, Cystopteris and Polystichum. However, whatever the species, LREEs were preferentially transferred to the fronds over HREEs. This conserved trait was independent of the availability of different REEs in the substrate and instead may arise from specific transfer systems in ferns for the two groups of REEs. Furthermore, REE accumulation was correlated to Ca and Al, which suggested the existence of common uptake pathways. Altogether, these results are of great interest for phytoremediation purposes since appropriate species can be chosen according to the area to be remediated, and they also provide new insights into a more in-depth characterisation of the underlying REE accumulation mechanisms in ferns.

Sources, behaviour, and environmental and human health risks of high-technology rare earth elements as emerging contaminants

2018 ◽  
Vol 636 ◽  
pp. 299-313 ◽  
Author(s):  
Willis Gwenzi ◽  
Lynda Mangori ◽  
Concilia Danha ◽  
Nhamo Chaukura ◽  
Nothando Dunjana ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Human Health ◽  
Health Risks ◽  
Emerging Contaminants ◽  
High Technology ◽  
Human Health Risks
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