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行业应用 | 聚焦食品安全-水产品中抗生素残留检测

采用目前使用广泛的磺胺类抗生素为待测物质,利用高效液相色谱法进行快速灵敏测定。磺胺类抗生素是由人工合成的,是一类具有比较广的抗菌谱、比较稳定的生化性质和较低廉的价格,并且使用也比较简便、供应充足、生产过程不损耗粮食的抗菌药物,这类药物结构中所具有的对氨基苯磺酰胺母核结构,通过不同取代基团在母核上R位的取代反应来形成其他许多种药物。

行星式球磨仪BR40关于鱼粉的研磨方案

BR40适用于对细度要求较高的应用场合,而且能满足胶体研磨的技术要求,其能量输入甚至满足机械法制备合金的要求。在高速的离心力作用下,行星式球磨仪产生粉碎能量,可将样品研磨至微米/纳米级别。试验设备1.行星式球磨仪。2.三维振动筛分仪

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干燥工艺对罗非鱼片品质的影响-美国FTC质构仪

通过比较不同干燥工艺对罗非鱼片品质的影响,寻求一种可替代真空冷冻干燥的技术,为高品质干制罗非鱼片及其同类水产品的加工及规模化生产提供技术支持。

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美国FTC-质构仪TMS-PRO

美国FTC-质构仪TMS-PRO

型号:TMS-PRO

利曼Hydra II C测汞仪对食品中甲基汞的测定

利曼公司 Hydra II C 直接测汞仪提供了一种针对甲基汞含量进行快速简单方便的检测方法,通过直接萃取测定,运行成本低,符合韩国食品测试方法甲基汞试验方法9.1.9.2。

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固体测汞仪

固体测汞仪

型号:Hydra II C

Biochrom30+氨基酸分析仪氧化水解法检测鱼粉A中氨基酸

Biochrom30+氨基酸分析仪氧化水解法检测鱼粉A中氨基酸,样品前处理所用试剂:必须使用重蒸馏水或与之等质的水(电导率<10μs)

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英国百康Biochrom氨基酸分析仪

英国百康Biochrom氨基酸分析仪

型号:Biochrom 30+

鳗鱼中沙星类化合物残留的测定解决方案

本方案参考农业部1077号公告-1-2008 《水产品中17种磺胺类及15种喹诺酮类药物残留的测定 液相色谱-串联质谱法》 ,采用酸化乙腈对目标化合物进行提取。由于标准中只进行了简单的除脂,提取液中仍含有大量的样品基质,容易干扰后续的液质测试。所以本方案采用HLB柱对提取液进行净化,使得整个检测结果更加具有平行性与可靠性。

气相色谱法测定水产品中氯霉素残留

关于氯霉素的检测方法,国外文献报道的主要有酶免疫法、放射免疫法、高效液相色谱法、气相色谱法和气质联用法。酶免疫法和放射免疫法主要用于大规模的筛选工作,不用于定量。高效液相色谱法前处理相对比较简单,但检出限比较高。配备ECD检测器的气相色谱法检测限也能达到0.1μg.kg-1,而且仪器比较普及,用此法检测氯霉素残留具有很高的推广意义。

气相色谱三重四极质谱联用法(TSQ8000) 测定水产品中 7 种多溴联苯醚(PBDEs)

本文建立了一种运用三重四极杆气质联用仪(GC-MS/MS)来检测水产品中多溴联苯醚的分析方法。试样中加入内标物 BDE-77 后进行索氏提取,提取液经自动 GPC 系统除脂,多层硅胶层析柱净化后,在 15 m 长的毛细管气相色谱柱上分离,采用 GC-MS/MS 的多反应监测模式(Timed-SRM),以保留时间和离子对(母离子和子离子)信息来定性,以响应值高的离子对进行定量。

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赛默飞三重四极杆气质联用仪

赛默飞三重四极杆气质联用仪

型号:TSQ 8000 Evo

3·15来了!曝光海参“水深”!

提取(1) 称取5 g样品,加入4 g氯化钠、15 mL乙腈,振荡5 min,6000 rpm离心2 min,收集上层清液;(2) 再向下层加入15 mL乙腈,按步骤(1)重复提取一次,合并两次上清液;(3) 将上清液在35 ℃水浴下减压蒸馏至干,加入1 mL乙腈,超声溶解,待净化。

运用单颗粒ICP-MS进行生物组织中纳米材料分析

目前,在生物组织中建立大规模的分析测试相对较少,很少有完整的检测方法和表征纳米材料开发,特别是粒子数量和大小分布。TMAH提取方法在粒子数量和总质量方面比组织消化使用声波超声法的回收率高,是一种很先进的技术在生物样品纳米材料分析方面。此实验是利用此提取方法并使用珀金埃尔默SP-ICP-MS NexION® 350Q进行分析。

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(1) 称取5 g样品,加入4 g氯化钠、15 mL乙腈,振荡5 min,6000 rpm离心2 min,收集上层清液;
(2) 再向下层加入15 mL乙腈,按步骤(1)重复提取一次,合并两次上清液;
(3) 将上清液在35 ℃水浴下减压蒸馏至干,加入1 mL乙腈,超声溶解,待净化。","CompanyName":"北京迪科马科技有限公司(迪马科技)","PgID":"174","CompanyID":"150167","CreateTime":"2020-07-17","HitNumber":"826","Name":"水产品","ClassID":"21853","ClassName":"食品","FClassID":"21638","FilePath":"2/20200717/637306002350081412480.pdf","FileDomain":"img75","IsDownload":"1","SecondData":[{"ID":"1618","ProductID":"24382812","Type":"","Name":"Endeavorsil(奋进)1.8 µm UHPLC柱","PictureDomain":"img71","Picture":"2/20200107/637140108769116209229.jpg","IsZhuTui":"1","UserID":"133732"}]},{"ID":"40","Title":"运用单颗粒ICP-MS进行生物组织中纳米材料分析","Describe":"目前,在生物组织中建立大规模的分析测试相对较少,很少有完整的检测方法和表征纳米材料开发,特别是粒子数量和大小分布。TMAH提取方法在粒子数量和总质量方面比组织消化使用声波超声法的回收率高,是一种很先进的技术在生物样品纳米材料分析方面。此实验是利用此提取方法并使用珀金埃尔默SP-ICP-MS NexION® 350Q进行分析。","CompanyName":"珀金埃尔默企业管理(上海)有限公司","PgID":"171","CompanyID":"95979","CreateTime":"2019-09-11","HitNumber":"217","Name":"水产品","ClassID":"21853","ClassName":"食品","FClassID":"21638","FilePath":"2/20190911/637037971548793283160.pdf","FileDomain":"img70","IsDownload":"0","SecondData":[{"ID":"228","ProductID":"19773458","Type":"","Name":"PE等离子体质谱NexION 350","PictureDomain":"img49","Picture":"2/20181227/636815022716975608354.jpg","IsZhuTui":"1","UserID":"78922"}]}]