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Biomedical and Environmental Sciences 2020年第6期33卷 414-420页

作者： ZHANG Yu LI Ya Jie ren tong xiang LIU Xiao Bing YANG Li Chen PAO Jian Hua WANG Jurr YANG Xiao Guang Key Laboratory of Trace Element Nutrition MOHChinese Center for Disease Control and PreventionBeijing 100050China Department of Preventive Medicine Changzhi Medical CollegeChangzhi 046000ShanxiChina National Institute of Metrology Beijing 100029China

Objective To analyze the rate of erythrocyte iron incorporation and provided guidance for the iron nutrition for prepubertal *** Fifty-seven prepubertal children of Beijing were involved in this study and each subject was orally administered 3 mg of 57 Fe twice daily to obtain a total of 30 mg 57 Fe after a 5-d period. The stable isotope ratios in RBCs were determined in 14 th day, 28 th day, 60 th day, and 90 th day. The erythrocyte incorporation rate in children was calculated using the stable isotope ratios, blood volume and body iron *** The percentage of erythrocyte 57 Fe incorporation increased starting 14 th day, reached a peak at 60 d(boys: 19.67% ± 0.56%, girls: 21.33% ± 0.59%) and then decreased. The erythrocyte incorporation rates of 57 Fe obtained for girls in 60 th day was significantly higher than those obtained for boys(P ren can be used to obtain erythrocyte iron incorporation within 90 d. Prepubertal girls should begin to increase the intake of iron and further studies should pay more attention to the iron status in prepubertal children.

关键词： Stable isotope tracer technique Iron Erythrocyte incorporation rate Beijing prepubertal children MC-ICP-MS

DIAGNOSIS AND TREATMENT OF CESAREAN SCAR PREGNANCY

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Chinese Medical Sciences Journal 2008年第1期23卷 10-15页

作者： Lan-zhou Jiao Jun Zhao Xi-run Wan Xin-yan Liu Feng-zhi Feng tong ren Yang xiang Department of Obstetrics and Gynecology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

Objective To investigate the early diagnosis and treatment of cesarean scar pregnancy （CSP）. Methods Clinical data of 28 patients with CSP in Peking Union Medical College Hospital from January 1994 to April 2007, including age, interval from the last cesarean delivery to diagnosis, clinical presentation, location of the lesion, process of diagnosis and treatment, outcome, and follow-up, were retrospectively analyzed. Re, salts CSP constituted 1.05 % of all ectopic pregnancies, and the ratio of CSP to pregnancy was 1 ： 1 221. The mean age of the group was 31.4 years. Twenty-six women had only one prior cesarean delivery. The interval from the last cesarean delivery to diagnosis ranged from 4 months to 15 years. The most common presenting symptoms of CSP were amenorrhoea and vaginal bleeding. Seventeen cases were misdiagnosed as early intrauterine pregnancies and 2 were misdiagnosed as gestational trophoblastic tumor. The other 9 were diagnosed definitely before treatment. The diagnosis was made based on cesarean delivery history, gynecologic examination, ultrasound, and magnetic resonance imaging （MRI）. The treatment of CSP included systemic or local methotrexate administration, conservative surgery, and hysterectomy. The conservative treatment was successful in 24 cases. All of the 28 women were cured through individual therapies. Conclusions CSP is rare and usually misdiagnosed as other diseases. Ultrasound is valuable for diagnosing CSP, and MRI can be used as an adjunct to ultrasound scan. Early diagnosis offers the options of conservative treatment and greatly improves the outcome of patients. Individual therapy is strongly recommended.

关键词： cesarean scar pregnancy misdiagnosis early diagnosis individual therapy

Estimation of Iron Physiological Requirement in Chinese Children using Single Stable Isotope Tracer Technique

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Biomedical and Environmental Sciences 2022年第8期35卷 681-687页

作者： ZHANG Yu LIU Xiao Bing ren tong xiang CAI Jie LU Jia Xi NIU Ran PIAO Jian Hua YANG Li Chen WANG Jun YANG Xiao Guang Chinese Center for Disease Control and Prevention Beijing 102206China Gansu Center for Disease Control and Prevention Gansu 73000LanzhouChina Key Laboratory of Trace Element Nutrition MOHNational Institute for Nutrition and HealthChinese Center for Disease Control and PreventionBeijing 100050China National Institute of Metrology Bejing 100029China Department of General Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBejing 100730China

Objective This study is to obtain precise data on iron physiological requirements in Chinese children using single stable isotope *** Thirty boys(10.6±0.2 years)and 27 girls(10.4±0.2 years)were received oral 6 mg ^(57)Fe each day for 5 consecutive *** blood samples were subsequently drawn to examine the change of total iron concentration and ^(57)Fe abundance at day 0,14,28,60,90,180,360,450,540,630,*** iron physiological requirement was calculated by iron loss combined with iron circulation rate once ^(57)Fe abundance stabilized in human *** The iron physiological requirement was significantly lower in boys than those values in girls(16.88±7.12 vs.18.40±8.81μg/kg per day,Prence intakes.

关键词： Iron absorption rate Physiological requirement Chinese children Stale isotope tracer Dietary reference intakes

Zinc Absorption from Representative Diet in a Chinese Elderly Population Using Stable Isotope Technique

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Biomedical and Environmental Sciences 2017年第6期30卷 391-397页

作者： LI Ya Jie LI Min LIU Xiao Bing ren tong xiang LI Wei Dong YANG Chun WU Meng YANG Lin Li MA Yu Xia WANG Jun PIAO Jian Hua YANG Li Chen YANG Xiao Guang Key Laboratory of Trace Element Nutrition National Health and Family Planning Commission of China Department of Trace Element Nutrition National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention Beijing 100050 China National Institute of Metrology Beijing 100029 China Department of Nutrition and Food Hygiene Capital University of Medical Sciences Beijing 100069 China HeBei Medical University Shijiazhuang 050017 Hebei China

Objective To determine the dietary zinc absorption in a Chinese elderly population and provide the basic data for the setting of zinc （Zn） recommended nutrient intakes （RNI） for Chinese elderly people. Methods A total of 24 elderly people were recruited for this study and were administered oral doses of 3 mg 67Zn and 1.2 mg dysprosium on the fourth day. The primary macronutrients, energy, and phytic acid in the representative diet were examined based on the Chinese National Standard Methods. Fecal samples were collected during the experimenta and dysprosium content. period and analyzed for zinc content, 67Zn isotope ratio, Results The mean （± SD） zinc intake from the representative Chinese diet was 10.6 ± 1.5 mg/d. The phytic acid-to-zinc molar ratio in the diet was 6.4. The absorption rate of 67Zn was 27.9% ±9.2%. The RNI of zinc, which were calculated by the absorption rate in elderly men and women, were 10.4 and 9.2 mg/d, respectively. Conclusion This study got the dietary Zn absorption in a Chinese elderly population. We found that Zn absorption was higher in elderly men than in elderly women. The current RNI in elderly female is lower than our finding, which indicates that more attention is needed regarding elderly females＇ zinc status and health.

关键词： Zinc absorption Chinese elderly people Stable isotope technique

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微区原位元素及同位素分析标准物质研究进展

质谱学报 2021年第5期42卷 641-655,I0003页

作者：王松高钰涯王军任同祥中国计量科学研究院北京100029

微区原位分析技术具有简单、快速、实时在线、空间分辨率高等优点,近年来广泛应用于地球科学、材料科学、生命科学等领域。微区原位分析时,样品前处理过程的省略不可避免地产生显著的基体效应,制约着微区原位分析结果的准确性和可靠性... 详细信息

微区原位分析技术具有简单、快速、实时在线、空间分辨率高等优点,近年来广泛应用于地球科学、材料科学、生命科学等领域。微区原位分析时,样品前处理过程的省略不可避免地产生显著的基体效应,制约着微区原位分析结果的准确性和可靠性。在测量中使用微区分析标准物质,尤其是与待测样品基体匹配的标准物质对结果进行校正,是克服基体效应最直接有效的方法,是获得可靠测量结果的必要保障。目前,相关微区分析计量标准严重匮乏,导致微区原位测量结果的准确性和可靠性难以保证,这已成为制约其进一步应用和发展的瓶颈,也是相关应用领域和计量研究机构关注的热点。本文系统介绍了微区原位元素及同位素分析用标准物质,包括微区标准物质的技术要求、制备技术、标准样品和标准物质现状等,并对微区原位分析标准物质的发展趋势进行展望。

关键词：微区原位标准物质制备技术元素分析同位素分析

Correlation between the Human Development Index and the Incidence and Mortality of Non-Hodgkin Lymphoma

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Current Medical Science 2023年第2期43卷 255-260页

作者： Wen-fu XU Ping YANG Zhi-wen WEI Jin-sheng LIU ren-lin YAN Qian CHEN ren-xiang tong Shuang-yun XU Wan-qing GAO Wen ZHANG Zhen-zhen CHANG Pei-lin WANG Hong-juan FANG Yun-yun ZHENG Tao WANG Na-na LIU Chao YAO Yan-li LIU Wei XIA Wei ZHAO Zhu-jun WANG Department of Pediatrics the Second People’s Hospital of HefeiHefei Hospital Affiliated to Auhui Medical UniversityHefei230011China Quality Control Department the Second People’s Hospital of HefeiHefei Hospital Affiliated to Auhui Medical UniversityHefei230011China Department of Pediatrics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China

Objective This study was to examine the relationship between socioeconomic status and the incidence and mortality of non-Hodgkin lymphoma(NHL).Methods We compared the age-standardized incidence rate(ASIR),age-standardized mortality rate(ASMR),and the ASMR to ASIR ratio(MIR)at national and regional levels and studied the correlation between the MIR and the human development index(HDI)in 2012 and *** The highest ASIR was in North America in 2012 and in Australia in 2018,and the lowest ASIR was in Central and South Asia in both 2012 and *** highest ASMR was in North Africa in both 2012 and 2018,and the lowest ASMR was in Eastern Asia and South-Central Asia in 2012 and in South-Central Asia in *** lowest MIR was in Australia in both 2012 and 2018,and the highest MIR was in Western Africa in both 2012 and *** was strongly negatively correlated with MIR(r:−0.8810,P<0.0001,2012;r:−0.8895,P<0.0001,2018).Compared to the 2012 data,the MIR in the intermediate HDI countries significantly deceased and the HDI in low and high HDI countries significantly increased in *** The MIR is negatively correlated with *** the HDI in low and intermediate HDI countries may reduce the MIR and increase the survival of patients with NHL.

关键词： non-Hodgkin lymphoma incidence mortality human development index

碰撞池-多接收电感耦合等离子体质谱分析硅同位素的方法研究

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质谱学报 2015年第2期36卷 104-110页

作者：任同祥周涛逯海周原晶王军中国计量科学研究院化学计量与分析科学研究所北京100013

通过更换仪器进样系统、改变溶液基体、调节碰撞气的种类和流量以及调节质量分辨率等参数,建立了碰撞池-多接收电感耦合等离子体质谱(Collision Cell-MC-ICP-MS)测定硅同位素丰度组成的分析方法。实验结果表明:使用PFA雾化器、Pt锥和蓝... 详细信息

通过更换仪器进样系统、改变溶液基体、调节碰撞气的种类和流量以及调节质量分辨率等参数,建立了碰撞池-多接收电感耦合等离子体质谱(Collision Cell-MC-ICP-MS)测定硅同位素丰度组成的分析方法。实验结果表明:使用PFA雾化器、Pt锥和蓝宝石材质的矩管可有效降低仪器本底;调节狭缝宽度、中心杯位置等可提高仪器的质量分辨率,实现硅同位素离子与同量异位素干扰离子在一定程度上的分离;选择氖气(Ne)和氩气(Ar)的混合气作为碰撞气、降低溶液中四甲基氢氧化铵(TMAH)浓度等能有效降低多原子离子的干扰。在此基础上,分析了样品WASO 04和GBW(E)080272中硅同位素的丰度组成,同位素丰度比R30/28的测量精度达到0.02%。将样品WASO 04作为参考标准时,样品GBW(E)080272中的硅同位素分馏系数δ30Si为-1.57‰。

关键词：多接收电感耦合等离子体质谱(MC-ICP-MS) 碰撞池硅同位素丰度比

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全蒸发-热电离质谱法的原理、技术和应用

质谱学报 2019年第5期40卷 434-446,I0003页

作者：王松王军宋盼淑逯海任同祥中国计量科学研究院

全蒸发-热电离质谱法(total evaporation thermal ionization mass spectrometry,TE-TIMS)无需标准物质进行校正,即可获得高准确度同位素丰度比值测量结果,同时具有样品用量少、重复性高等优点,在核工业、环境、地质、计量学等领域逐渐... 详细信息

全蒸发-热电离质谱法(total evaporation thermal ionization mass spectrometry,TE-TIMS)无需标准物质进行校正,即可获得高准确度同位素丰度比值测量结果,同时具有样品用量少、重复性高等优点,在核工业、环境、地质、计量学等领域逐渐获得了认可与应用。本文从全蒸发-热电离质谱法的原理、技术特点、研究进展和重要应用等方面对其进行了系统地评述,分析该方法在使用中的关键技术点,并对未来发展进行了展望。

关键词：全蒸发-热电离质谱法(TE-TIMS) 质量分馏效应同位素丰度比

多接收等离子质谱高精度测定现代人齿中Mg同位素

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分析化学 2016年第5期44卷 787-791页

作者：李子夏贺茂勇逯海任同祥西安医学院口腔医学系中国科学院地球环境研究所黄土与第四纪国家重点实验室陕西省加速器质谱技术及应用重点实验室中国计量科学研究院

Mg是构成牙齿重要组分,其含量和同位素组成可记录居民生活地域、饮食习惯以及口腔健康信息等重要信息。本研究建立了高精度多接收等离子质谱（MC-ICP-MS）测定牙齿中Mg同位素方法。牙齿样品经微波消解仪消解,后采用AG50W-X8阳离子树脂... 详细信息

Mg是构成牙齿重要组分,其含量和同位素组成可记录居民生活地域、饮食习惯以及口腔健康信息等重要信息。本研究建立了高精度多接收等离子质谱（MC-ICP-MS）测定牙齿中Mg同位素方法。牙齿样品经微波消解仪消解,后采用AG50W-X8阳离子树脂分离溶液中的Mg元素,以1 mol/L HNO;为介质上柱,40 m L1 mol/L HNO;洗脱Na;等杂质离子,再以30 m L 1 mol/L HNO;收集Mg元素,60 m L 1 mol/L HNO;洗去其它杂质,蒸干Mg收集液。MC-ICP-MS进行Mg同位素组成测定。MC-ICP-MS仪器自身的质量分馏利用"样品-标准"交叉技术（"Sample-standard"bracketing technique）解决。实验结果表明,利用AG50W-X8阳离子树脂,可在保证Mg回收率的情况下,将牙齿样品中的Mg和其它基质元素彻底分离,且不造成同位素分馏。采用此方法对现代人离体牙牙釉质中Mg同位素进行分离测定,牙齿的δ;Mg在较大的范围变化（!1.38‰;.59‰）。本方法为利用人牙齿中Mg同位素研究Mg的暴露水平、环境污染等信息提供重要的实验和理论依据。

关键词：镁同位素牙齿多接收器等离子体质谱

铕浓缩同位素全蒸发-1012Ω高阻信号放大器的热电离质谱分析方法

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质谱学报 2020年第1期41卷 19-27,I0001页

作者：王松王军任同祥张继龙周原晶中国计量科学研究院北京100029 国家核安保技术中心北京102401

浓缩同位素是校正质谱法、同位素稀释质谱法和双稀释剂法等同位素质谱分析技术的基础,其化学纯度及丰度量值的准确性直接影响着分析结果的准确性。但由于浓缩同位素中低丰度同位素的离子信号较难准确测量,且缺乏合适的标准物质校正,给... 详细信息

浓缩同位素是校正质谱法、同位素稀释质谱法和双稀释剂法等同位素质谱分析技术的基础,其化学纯度及丰度量值的准确性直接影响着分析结果的准确性。但由于浓缩同位素中低丰度同位素的离子信号较难准确测量,且缺乏合适的标准物质校正,给高精准的同位素丰度分析带来挑战。本文建立了适用于微量铕浓缩同位素样品纯化的锌还原-萃取色层法,纯化后的151 Eu和153 Eu两种浓缩同位素纯度优于99.99%,有效消除了其他稀土元素杂质的干扰。通过采用1012Ω信号放大器的法拉第杯接收样品中的低丰度同位素离子信号,建立了铕浓缩同位素的全蒸发-热电离分析方法。两种浓缩同位素样品的主丰度测量结果分别为151 Eu 0.9683676(11)和153 Eu 0.9876851(21),测量重复性比1011Ω信号放大器的法拉第杯以及文献中校正质谱法的测量结果提高了3倍。

关键词：全蒸发-热电离质谱法浓缩同位素 1012Ω信号放大器铕还原-萃取色层法