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磁性纳米分子印迹聚合物的制备及其对生物体内PQQ-DA痕量产物的研究 被引量:3
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作者 毛师师 周杏琴 +2 位作者 钦晓峰 徐希杰 谢敏浩 《分析测试学报》 CAS CSCD 北大核心 2019年第4期482-487,共6页
以磁性Fe_3O_4为内核,对磁性纳米粒子表面进行包裹和修饰,制备了对吡咯并喹啉醌-多巴胺(PQQ-DA)具有高识别性、高选择性的磁性纳米分子印迹材料,并结合超高效液相色谱-质谱(UPLC-MS)测定了生物体内PQQ-DA的含量。结果显示,PQQ-DA在0.02... 以磁性Fe_3O_4为内核,对磁性纳米粒子表面进行包裹和修饰,制备了对吡咯并喹啉醌-多巴胺(PQQ-DA)具有高识别性、高选择性的磁性纳米分子印迹材料,并结合超高效液相色谱-质谱(UPLC-MS)测定了生物体内PQQ-DA的含量。结果显示,PQQ-DA在0.02~0.1 mg/mL范围内呈良好的线性关系,相关系数(r^2)为0.996 6,检出限为0.2×10^(-11) mg/mL,加标回收率为88.7%~95.5%,相对标准偏差为2.6%~3.2%。该方法灵敏度高、重复性好,可用于生物体内PQQ-DA痕量产物的检测。 展开更多
关键词 磁性纳米分子印迹 吡咯并喹啉醌-多巴胺(PQQ-DA) 超高效液相色谱-质谱(UPLC-MS) 固相萃取 痕量产物
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The transformation and concentration of environmental hazardous trace elements during coal combustion 被引量:1
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作者 YAO Duo-xi ZHI Xia-chen 《Journal of Coal Science & Engineering(China)》 2010年第1期74-77,共4页
Studied the content and distribution of 18 environmental hazardous trace elementsin the lignite, fatty coal, anthracite and its burnt products by combustion simulatingexpriment in the one-dismensinal boiler.The transf... Studied the content and distribution of 18 environmental hazardous trace elementsin the lignite, fatty coal, anthracite and its burnt products by combustion simulatingexpriment in the one-dismensinal boiler.The transformations and concentration of 18 traceelements during different coal combustion were discussed.The results show that there aresome content distribution of 18 hazardous trace elements in every burnt product, but thelaw of concentration and dispersion of every trace element during different coal combustionis very different.Experiment results indicate that the transformation and concentrationof trace elements during coal combustion are related to the element contents and occur-rencesof trace elements in raw coal, but are also affected by some man-made factorssuch as the combustion method of boiler, combustion temperature and atmosphere, thetype of precipitators and so on. 展开更多
关键词 environmental hazardous trace elements transformation and concentration coal combustion
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