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非自身标样定量测定DNTF的分析方法 被引量:1
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作者 罗西 刘红妮 +4 位作者 苏鹏飞 张皋 胡银 杨彩宁 刘可 《火炸药学报》 EI CAS CSCD 北大核心 2019年第1期94-96,102,I0006,共5页
为了在标准物质缺乏的情况下能够准确定量3,4-二硝基呋咱基氧化呋咱(DNTF),采用气相色谱-原子发射光谱(GC-AED)联用技术,建立了一种DNTF的非含能非自身标样定量测定方法;通过对比DNTF和5种非含能材料(二苯胺、苯甲酸、乙酰苯胺、DBS、D... 为了在标准物质缺乏的情况下能够准确定量3,4-二硝基呋咱基氧化呋咱(DNTF),采用气相色谱-原子发射光谱(GC-AED)联用技术,建立了一种DNTF的非含能非自身标样定量测定方法;通过对比DNTF和5种非含能材料(二苯胺、苯甲酸、乙酰苯胺、DBS、DBP)的C元素标准曲线,选择相对定量响应因子最接近1的非含能材料作外标物定量DNTF的C元素,再结合分子式对DNTF进行定量。结果表明,苯甲酸的相对定量响应因子最接近1,用苯甲酸的C元素标准曲线定量DNTF的C元素,得到DNTF的C元素线性范围为17.43~426.92μg/mL,相关系数(r)为0.9992;以3倍信噪比计算检测限,得到DNTF的C元素方法检测限为0.0096μg/mL;相同条件下,DNTF在线性范围内高、中、低浓度下的加标回收率分别为104.9%,103.7%和109.4%,相对标准偏差分别为3.3%、1.1%和1.5%;该方法具有较好的准确度和精密度,可以实现在自身标准物质缺乏的情况下用非含能材料作外标物对DNTF的准确定量。 展开更多
关键词 分析化学 高能量密度材料 气相色谱-原子发射光谱 CIC法 3 4-二硝基呋咱基氧化呋咱(DNTF) 苯甲酸
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Clinical malaria and the potential risk of anaemia among preschool-aged children:apopulation-based study of the 2015-2016 Malawi micronutrient survey
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作者 Peter Austin Morton Ntenda Sosten Chilumpha +2 位作者 Edward Tisungane Mwenyenkulu Jane Flora Kazambwe Walaa El-Meidany 《Infectious Diseases of Poverty》 SCIE 2019年第6期28-38,共11页
Background:Anaemia and malaria are common and life-threatening diseases among preschool-aged children in many tropical and subtropical areas,and Malawi is no exception.Accordingly,this study aimed to examine the assoc... Background:Anaemia and malaria are common and life-threatening diseases among preschool-aged children in many tropical and subtropical areas,and Malawi is no exception.Accordingly,this study aimed to examine the association of referral clinical malaria with anemia(hemoglobin[Hb]<110g/L)in preschool-aged children in Malawi.Methods:Using cross-sectional data obtained from the 2015-2016 Malawi Micronutrient Survey(MNS),multivariate logistic regression models were construaed using surveylogistic to account for the complex survey design.Blood samples of 1051 children aged 6-59 months were evaluated for malaria(using rapid diagnostic test[RDT]-SD BIOLINE Malaria Ag P.f/Pan test histidine-rich protein(HRP-Ⅱ)^™),Hb(using HemoCue 301),a-1-acid glycoprotein(AGP),and serum ferritin biomarkers(using simple sandwich enzyme-linked immunosorbent assay technique,ELISA)and inherited blood disorders from dry blood samples(DBS)using polymerize chain reaaion(PCR).Diagnosis of clinical malaria was made on the basis of fever and a positive rapid diagnostic test(RDT).Results:Of the 1051 PSC analysed,29%had anaemia while 24.4%had a referral to the hospital due to malaria.After adjustments for known confounders,PSC with a history of referral clinical malaria had increased odds of being anaemic(adjusted odds ratio[aOR]=4.63,95%confidence interval[Cf]:2.90-7.40),P<0.0001.Conclusions:This study found that clinical malaria increased the risk of anaemia in PSC Thus,elimination of malariacausing parasites from the PSCs blood should be rapid and complete in order to prevent the progression of uncomplicated malaria to a chronic infection that can lead to the development of malaria-related anaemia. 展开更多
关键词 Clinical malaria ANAEMIA a-acid glycoprotein Serum ferritin Malawi
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