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Search Results: 1 - 10 of 57252 matches for " 薄海波 "
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Determination of Azoxystrobin Residues in Fruits and Vegetables by Gas Chromatography/Mass Spectrometry with Solid-Phase Extraction
固相萃取-气相色谱/质谱法分析水果和蔬菜中残留的嘧菌酯

BO Haibo,
海波

色谱 , 2007,
Abstract: A method was developed for the determination of azoxystrobin residues in fruits and vegetables by gas chromatography/mass spectrometry (GC/MS). Azoxystrobin residues were extracted with ethyl acetate-cyclohexane (1 : 1, v/v) by ultrasonication and then they were cleaned up on a silica solid-phase extraction (SPE) column to obtain an extract suitable for analysis by GC/MS in the selective ion monitoring (SIM) mode (the selected ion: m/z 344, 372, 388 and 403). The calibration curves were linear between area and concentration of azoxystrobin from 0.01 to 1.0 mg/kg with the correlation coefficient greater than 0.99. The average recoveries from spiked fruit and vegetable matrixes at three concentrations of 0.01, 0.1, 1.0 mg/kg ranged from 85.2% to 98.2% with relative standard deviation less than 21.5%. The limit of detection was 0.01 mg/kg and the limit of quantity was 0.05 mg/kg in fruit and vegetable matrixes, respectively.
气相色谱法测定甜瓜和苹果中嘧菌酯残留
海波,毕阳,陈立仁
分析化学 , 2005,
Abstract: 建立了甜瓜和苹果中嘧菌酯残留量的两种气相色谱快速分析方法.实验样品用乙酸乙酯-环己烷(50:50,V/V)超声波萃取,气相色谱-氮磷检测(NPD)或气相色谱-微池电子捕获检测(μ-ECD)法测定.因不存在干扰峰,样品不需净化.这两种检测方法互相确证了定性和定量结果,方法回收率均在85.7%~110.5%之间;最低检出浓度:苹果在NPD上为0.001mg/kg,在μ-ECD上和甜瓜在两种检测器上均为0.002mg/kg,标准曲线的线性回归系数分别为0.9991(μ-ECD)和0.9998(NPD).经配对t检验统计分析,两种检测方法定量结果无显著性差异.
安睡伴侣软胶囊中丁香酚含量测定方法研究
海波,索有瑞,陈立仁
中国中药杂志 , 2005,
Abstract: <正>安睡伴侣软胶囊由纯天然传统藏药(包括丁香、肉豆蔻、胡椒、阿魏等6味药材)组方,经超临界CO2萃取其中的挥发油等活性成分后精制而成,具有安
气相色谱/质谱法测定食品中甲氧基丙烯酸酯类杀菌剂残留
海波,王金花,郭春,秦榕,卢小宇
分析化学 , 2008,
Abstract: 建立了一种专属、灵敏的气相色谱-质谱分析方法,用于检测水果、蔬菜、饮料、粮谷类、坚果类和肉、蛋、奶类等多种类型食品中嘧菌酯、醚菌胺、嘧蟎酯、氟嘧菌酯、醚菌酯、Z-苯氧菌胺、E-苯氧菌胺、肟醚菌胺、啶氧菌酯、唑菌胺酯和肟菌酯等11种甲氧基丙烯酸酯类杀菌剂残留量。对于不同类型的样品,使用不同有机溶剂对甲氧基丙烯酸酯类杀菌剂进行超声波提取,经凝胶渗透色谱对样品提取液进行净化、富集,采用气相色谱-质谱法以选择离子监测模式进行定性,外标法定量。上述各种杀菌剂在0.05~5.0mg/kg浓度范围内呈线性,相关系数r>0.99。在空白样品中,添加甲氧基丙烯酸酯类杀菌剂的回收率在60.3%~120.0%之间,精密度(RSD)为1.54%~13.41%。各组分检出限均在0.002~0.015mg/kg之间。
柱切换直接进样高效液相色谱法测定蜂蜜中3种抗生素的残留量
海波,柳春辉,张红丽,李永民,陈立仁
分析化学 , 2005,
Abstract: 建立了柱切换反相高效液相色谱法直接进样分离、测定蜂蜜中3种四环素族抗生素(土霉素OTC、四环素TC、金霉素CTC)残留量的分析方法.方法包括:用缓冲溶液溶解样品、直接进样、二次蒸馏水作流动相在C18预柱上在线富集和净化,然后用柱切换阀将预柱与一个C18分析柱接通,草酸溶液-乙腈-甲醇作流动相、紫外检测器在350nm处检测.各组分回收率均大于85%;相对标准偏差小于10%;标准曲线的相关系数在0.9983~0.9991之间;最低检出浓度(≤0.02mg/kg),满足欧盟和日本等国要求(0.05mg/kg).
超高效液相色谱-串联质谱法测定牛奶和奶粉中6种聚醚类抗生素残留量
海波,雒丽丽,曹彦忠,星玉秀,庞国芳
分析化学 , 2009,
Abstract: 建立了用于检测牛奶和奶粉中拉沙洛菌素、莫能菌素、尼日利亚菌素、盐霉素、甲基盐霉素和马杜霉素铵6种聚醚类抗生素残留量的超高效液相色谱-串联质谱分析方法。用乙腈提取样品中的聚醚类抗生素,提取液经HLB固相萃取柱净化,采用超高效液相色谱分离,以电喷雾离子源正离子多反应监测模式进行质谱分析。6种抗生素在0.5~100.0μg/L范围内均呈线性,相关系数r>0.99。在空白样品中添加6种聚醚类抗生素的回收率均在74.0%~98.5%之间;精密度(RSD)4.8%~17.2%。牛奶中6种聚醚类抗生素检出限均为0.2μg/L;奶粉中6种聚醚类抗生素检出限均为1.6μg/kg。
塑料食品包装材料中塑料添加剂检测研究进展
Progresses of Plastic Additive Research in Plastic Food Packaging
 [PDF]

姚利红, 吉生军, 王静莹, 海波
Advances in Analytical Chemistry (AAC) , 2016, DOI: 10.12677/AAC.2016.61004
Abstract:
本文对食品用塑料包装材料中所含的七大类塑料添加剂(抗氧化剂、增塑剂、紫外线吸收剂、发泡剂、阻燃剂、着色剂、表面活性剂)的毒性、迁移、检测、应用等情况作了综述,揭示了塑料添加剂研究的必要性,为后续研究工作提供理论依据和参考。
Here, we reviewed the information of the seven kinds of plastic additives (antioxidant, plasticizer, ultraviolet light absorber, foaming agent, fire retardant, colorant and surfactant) in plastic food packaging, which included its toxicity, migration, determination and applications. This paper re-vealed the necessity of research, and can serve as a theoretical base and reference for the further study.
Determination of fluoxastrobin and fluacrypyrim residues in fruits and beverages by ultra performance liquid chromatography
超高效液相色谱法测定水果和饮料中残留的氟嘧菌酯和嘧螨酯

LUO Lili,BO Haibo,BI Yang,WU Yonglong,
雒丽丽
,海波,毕阳,吴永隆

色谱 , 2009,
Abstract: 建立了多种水果和饮料中氟嘧菌酯和嘧螨酯残留的超高效液相色谱测定方法.样品用乙酸乙酯-环己烷(体积比为1∶1)超声波萃取,凝胶渗透色谱法净化,超高效液相色谱-二极管阵列检测器检测,外标法定量.采用 BEH C18色谱柱(50 mm×2.1 mm,1.7 μm),流动相为水-乙腈(体积比为3∶7),流速为0.3 mL/min,柱温为40 ℃,紫外检测波长为251 nm.实验结果表明:氟嘧菌酯和嘧螨酯在0.05~2 mg/L 范围内线性关系良好(r>0.999),在不同的基质中添加3个浓度水平(0.01,0.05,0.1 mg/kg)的氟嘧菌酯和嘧螨酯,两者的回收率均在82.60% ~101.11%之间,相对标准偏差为5.4% ~15.3% ;检出限不大于6 μg/kg,定量限不大于20 μg/kg.
Determination of levamisole residue in milk and milk powder by ultra performance liquid chromatography-tandem mass spectrometry
超高效液相色谱-串联质谱法测定牛奶和奶粉中残留的左旋咪唑

BO Haibo,PANG Guofang,LUO Lili,CAO Yanzhong,
海波
,庞国芳,雒丽丽,曹彦忠

色谱 , 2009,
Abstract: 建立了一种专属、灵敏的超高效液相色谱-串联质谱(UPLC-MS/MS)测定牛奶和奶粉中左旋咪唑残留量的方法.在碱性环境下用乙酸乙酯超声波提取试样中的左旋咪唑,再经稀盐酸反提取、强阳离子交换(SCX)固相萃取柱净化,采用BEHC18超高效液相色谱柱、乙腈-0.1%甲酸(体积比为15∶85)流动相分离,以电喷雾离子源正离子检测方式进行质谱分析.实验结果表明,在2.0~100.0 μg/L 浓度范围内左旋咪唑呈良好的线性关系,其相关系数r=0.997.在低、中、高3个浓度添加水平下,左旋咪唑的回收率为64.5% ~102.0% ,相对标准偏差小于13.1% .牛奶中左旋咪唑检出限为0.4 μg/kg,奶粉中左旋咪唑检出限为2.0 μg/kg.
Analysis of Fatty Acids in Gymnocypris przewalskii Oil by Gas Chromatography/Mass Spectrometry with Base-Catalyzed Transesterification
碱催化法衍生化气相色谱/质谱法分析青海湖裸鲤鱼油中的脂肪酸

BO Haibo,WANG Xia,ZHAI Zongde,LI Yongmin,CHEN Liren,
海波
,王霞,翟宗德,李永民,陈立仁

色谱 , 2006,
Abstract: The composition of fatty acids (FA) in Gymnocypris przewalskii oil was identified and quantified by gas chromatography (GC)/electron impact (EI) mass spectrometry (MS). A base-catalyzed transesterification method was used to convert fatty acids to methyl esters. The lipids were extracted using petroleum ether and the total lipids in dried meat and skin of Gymnocypris przewalskii were about 25%. Forty-seven fatty acids were identified in the current study. Main types of fatty acids found in the oils were normal saturated, mono-branched, multi-branched, cyclopropane, furanoid, normal monounsaturated and polyunsaturated fatty acids. Saturated fatty acids were approximately 25. 7% of the total, and the main components were C(14:0) (3.4%), C(16:0) (19.4%) and C(18:0) (1.1%). Unsaturated fatty acids were totally 73.6%, and the major components of monounsaturated fatty acids were C(16:1 (9)) (19.8%), C(18:1) (9)) (18. 6%) and C(18:1 (11)) (7.3%); polyunsaturated fatty acids were mainly composed of C(18:2 (9,12)) (4.8%), C(18:3 (9, 12, 15)) (3.1%), C(20:4 (5, 8, 1, 14)) (1.2%), C(20:5 (5, 8, 11, 14, 17)) (EPA, 9.4%) and C(22:6 (4, 7, 10, 13, 16, 19)) (DHA, 6.7%). Especially, furyl-, cyclopropane- and several odd and branched chain fatty acids were found in Gymnocypris przewalskii oil. It is thus an important dietary resource of functional fatty acids.
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