Publication date: February 2018
Source:Atmospheric Environment, Volume 174
Author(s): Yunchuan Gao, Chao Yang, Jin Ma, Meixue Yin
Fifty-five snow samples were collected from 11 cities in east-central China. These sampling sites cover the areas with the most snowfall in 2014, there were only two snowfalls from June 2013 to May 2014 in east-central China. Twenty-three trace elements in the filtered snow samples were measured with inductively coupled plasma-mass spectrometry (ICP-MS). Statistical analysis of the results show that the total concentrations of elements in the samples from different cities are in the order of SJZ > LZ > XA > ZZ > GD > NJ > QD > JX > WH > HZ > LA, which are closely related to the levels of AQI, PM2.5 and PM10 in these cities, and their correlation coefficients are 0.93, 0.76 and 0.93. The concentration of elements in snow samples is highly correlated with air pollution and reflects the magnitude of the local atmospheric deposition. The concentrations of Fe, Al, Zn, Ba, and P are over 10.0 μg/L, the concentrations of Mn, Cu, Pb, As, Br and I are between 1.0 μg/L to 10.0 μg/L, the concentrations of V, Cr, Co, Ni, Se, Mo, Cd and Sb are less than 1.0 μg/L in snow samples in east-central China, and Rh, Pd, Pt, Hg were not detected. Iodine and bromine species in all samples and arsenic species (As(III), As(V), dimethylarsinic acid (DMA) and monomethyl arsenic (MMA)) in some samples were separated and measured successfully by HPLC-ICP-MS. The majority of arsenic in the snow samples is inorganic arsenic, and the concentration of As(III) (0.104–1.400 μg/L) is higher than that of As(V) (0.012–0.180 μg/L), while methyl arsenicals, such as DMA and MMA, were almost not detected. The concentration of I− (Br−) is much higher than that of IO3− (BrO3−). The mean concentration of soluble organic iodine (SOI) (1.64 μg/L) is higher than that of I− (1.27 μg/L), however the concentration of Br− (5.58 μg/L) is higher than that of soluble organic bromine (SOBr) (2.90 μg/L). The data presented here shows that SOI is the most abundant species and the majority of the total bromine is bromide in snow sampled at east-central China. Using Fe as the reference element to calculate the EFs, the enrichment factors of V, Cr, Co, Ni, Mn, Ba and P are between 12.3 and 82.8, and the enrichment factors of Cu, Pb, Mo, Zn, Cd, As, Sb, Br, I and Se are between 189.4 and 27667.9, indicating that these elements are contributed by artificial sources. Results of principal component analysis (PCA) on the elements showed that most of trace elements (e.g. V, Cr, Mn, Co, Ni, Cu, As, Mo, Sb, Se, Br, I, Ba and P)were from the combustion of fossil fuels, traffic and ocean sources and some other elements (e.g. Zn, Cd and Pb) were mainly originated from industrial activities.
from #ORL-AlexandrosSfakianakis via ola Kala on Inoreader http://ift.tt/2BpgauF
Αρχειοθήκη ιστολογίου
-
►
2023
(269)
- ► Φεβρουαρίου (133)
- ► Ιανουαρίου (136)
-
►
2022
(2046)
- ► Δεκεμβρίου (165)
- ► Σεπτεμβρίου (161)
- ► Φεβρουαρίου (165)
-
►
2021
(3028)
- ► Δεκεμβρίου (135)
- ► Σεπτεμβρίου (182)
- ► Φεβρουαρίου (324)
-
►
2020
(1051)
- ► Δεκεμβρίου (292)
- ► Σεπτεμβρίου (60)
- ► Φεβρουαρίου (28)
-
►
2019
(2277)
- ► Δεκεμβρίου (18)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (89)
-
►
2018
(26280)
- ► Δεκεμβρίου (189)
- ► Φεβρουαρίου (6130)
- ► Ιανουαρίου (7050)
-
▼
2017
(33948)
- ► Δεκεμβρίου (6715)
-
▼
Νοεμβρίου
(6500)
-
▼
Νοε 27
(157)
- Pharmacokinetic/pharmacodynamic analysis of adjunc...
- Prognosis of status epilepticus in elderly patients
- Seizures, CSF neurofilament light and tau in patie...
- Serial electrophysiology in Guillain-Barré syndrom...
- Vocational outcome in cerebral venous thrombosis: ...
- Real-life clinical use of natalizumab and fingolim...
- Aneuploidy, TP53 mutation, and amplification of MY...
- Functions of the multi-interacting protein KIDINS2...
- Re: Should every medical student have exposure to ...
- Measuring childhood cancer late effects: evidence ...
- Phantom validation of quantitative Y-90 PET/CT-bas...
- Management of hereditary breast and ovarian cancer
- Clinical consequences of upfront pathology review ...
- Quantitative CT assessment of a novel direction-mo...
- Tuberculosis in Pap Samples with Emphasis on LBC: ...
- Cysticercosis and cytodiagnosis
- Acknowledgment to reviewers
- Mycotic pseudoaneurysm of a pulmonary artery branc...
- Heterotopic Ossification During a Ventral Hernia R...
- Attelle nasale externe sur-mesure après rhinoplast...
- Fixation des greffes de peau mince dans les brûlur...
- Characteristics of the trace elements and arsenic,...
- Variations of radon concentration in the atmospher...
- Effect of dendritic cell-cytokine-induced killer c...
- Life course evolution of body size and breast canc...
- Postnatal myocardium remodelling generates inhomog...
- Postnatal myocardium remodelling generates inhomog...
- miR-221/222 cluster expression improves clinical s...
- The Walking Dead: sequential nuclear and organelle...
- Perioperative, spatiotemporally coordinated activa...
- miR-139-5p modulates radiotherapy resistance in br...
- A potent, metabolically stable tubulin inhibitor t...
- Distinct TP63 isoform-driven transcriptional signa...
- New mechanisms of resistance to MEK inhibitors in ...
- Vitamin C sensitizes melanoma to BET inhibitors
- Utility of single cell genomics in diagnostic eval...
- SHMT2 desuccinylation by SIRT5 drives cancer cell ...
- MYC targeted long non-coding RNA DANCR promotes ca...
- ER alpha binding by transcription factors NFIB and...
- Small molecule inhibition of Axl targets tumor imm...
- YAP1 and COX2 coordinately regulate urothelial can...
- Synthetic lethality of PARP inhibitors in combinat...
- The influence of family adaptability and cohesion ...
- Management of bone health in postmenopausal women ...
- Automatic referral to standardize palliative care ...
- Totally implantable venous access ports: a prospec...
- Clinical equivalence with G-CSF biosimilars: metho...
- Amisulpride in the prevention of nausea and vomiti...
- Impact of emotional competence on supportive care ...
- A randomized phase II trial of geriatric assessmen...
- Predictive model of complexity in early palliative...
- Making an informed decision of Korean cancer patie...
- An optimal design for the study of palliative seda...
- Information service in head and neck cancer care—a...
- Efficacy of palonosetron to prevent delayed nausea...
- Shared decision-making in palliative care: desires...
- Barriers and enablers to implementing scalp coolin...
- Prevalence of hyponatremia in inpatients with incu...
- Palliative care needs in hospitalized cancer patie...
- Is the addition of a neurokinin-1 receptor antagon...
- A prospective study of docetaxel-associated pain s...
- Beyond death and dying: how Chinese spouses naviga...
- Small cell carcinomas of the bladder and lung are ...
- Classifying colorectal cancer by tumor location ra...
- Honokiol Radiosensitizes Squamous Cell Carcinoma o...
- Cell-Free DNA and Circulating Tumor Cells: Compreh...
- t-Darpp activates IGF-1R signaling to regulate glu...
- Novel BAFF-receptor antibody to natively folded re...
- Effect of burn rehabilitation program on improving...
- Effect of burn rehabilitation program on improving...
- Evaluation of the Implantable Doppler Probe for Fr...
- Staged Reconstruction (Delayed-Immediate) of the M...
- Comparing Videostroboscopy and Direct Microlaryngo...
- Clinical outcome after 36 months of treatment with...
- An improved system for grading and treating tinnitus
- Detecting sub-second changes in brain activation p...
- How Was Your Otology Training? A Survey of Recent ...
- Morphological Characteristics of Osseous External ...
- Do Measurements of Inner Ear Structures Help in th...
- Value of T1-weighted Magnetic Resonance Imaging in...
- The Etiological Relationship Between Migraine and ...
- Patterns of Extended High-frequency Hearing Loss F...
- Effectiveness in Rehabilitation of Current Wireles...
- High Incidence of Bell's Palsy After Mastoidectomy...
- Prospective Evaluation of Patients Undergoing Tran...
- Dizziness Handicap Inventory Score Is Highly Corre...
- Mastoid and Inner Ear Measurements in Patients Wit...
- Risk Factors of Recurrence in Pediatric Congenital...
- Pain Free 3 T MRI Scans in Cochlear Implantees
- Usefulness of Electrical Auditory Brainstem Respon...
- Different contexts change the impression of animacy
- Axonal excitability changes and acute symptoms of ...
- A Multivariate Analytic Approach to the Differenti...
- Literacy analysis of National Comprehensive Cancer...
- Gobbling Food May Boost Metabolic Risk
- Right-Ear Advantage for Speech-in-Noise Recognitio...
- Right-Ear Advantage for Speech-in-Noise Recognitio...
- A Novel Translational Model of Spinal Cord Injury ...
- Motion contrast in primary visual cortex: a direct...
- Preservation of neuronal functions by exosomes der...
-
▼
Νοε 27
(157)
- ► Σεπτεμβρίου (6470)
-
►
2016
(4179)
- ► Σεπτεμβρίου (638)
- ► Φεβρουαρίου (526)
- ► Ιανουαρίου (517)
Δευτέρα 27 Νοεμβρίου 2017
Characteristics of the trace elements and arsenic, iodine and bromine species in snow in east-central China
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου