Ordered mesoporous silicon doped with HPMo-SiO 2 solid phase extraction of trace Pb prior to flame atomic absorption spectrometry determination

Micro & nano letters

article

Junfeng Liu¹  Hongli Sun²  Yang Zheng²  Qiuyue Wang²  Jing Guo²  Yiwei Wu² 

[1] Department of Clinical Laboratory, The Second Hospital of Huangshi;Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Institute for Advanced Materials, College of Chemistry and Chemical Engineering, Hubei Normal University

关键词: molybdenum compounds;    silicon compounds;    mesoporous materials;    lead;    doping;    atomic absorption spectroscopy;    adsorption;    recovery;    doped ordered mesoporous silicon;    solid phase extraction;    flame atomic absorption spectrometry;    sensitivity method;    lead determination;    phosphomolybdic acid;    adsorptive mechanism;    potassium hydrogen phthalate media;    enrichment factor;    detection limit;    human serum;    waste water;    pond water;    soil;    whitening cosmetics;    recoveries;    Pb;    SiO2;   

DOI  :  10.1049/mnl.2017.0915

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Systemic sclerosis (SSc) is an autoimmune systemic disease of unknown etiology. Present treatment modalities have limited impact on clinical/ laboratory outcomes. For the first time in our center, we used plasma exchange (PEx) in a rather young woman with recent onset but progressive SSc. She is a 39-year-old woman with a recent history of skin stiffness, Raynaud’s phenomenon, nail fold capillary changes and newly diagnosis of SSc presented to us due to worsening her clinical symptoms even after initiation of routine remedies such as low dose oral prednisolone, Ca-channel blockers, azathioprine and pentoxyfylline. After obtaining written consent, interdisciplinary discussion with experts in this field and agreement we started a series of plasma exchange with FFP replacement for her. A dramatic clinical response was observed in respect to Raynaud’s phenomenon, skin stiffness, tendon rub after three sessions of PEx. Her modified Rodnan skin score ( MRSS ) dropped from 36 (before commencement of therapy) to 28 in day 4 and 18 in day 20 after 15 sessions of PEx. In conclusion PEx could significantly modify the course of SSc as observed in our case study. Elimination of culprit immune mediators/cytokines/autoantibodies could be the possible mechanism of action of PEx.

【 授权许可】

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