分析测试百科网 认证会员,请放心拨打!
诚信认证:
工商注册信息已核实!1014125976
LUMTECH Sin-QuEChERS 改良QuEChERS方法,特定的吸附材料,实现“一步净化”多残留。
品牌:LUMTECH
名称:LUMTECH Sin-QuEChERS TEA 茶叶专用净化柱(112-9669-362)
LUMTECH Sin-QuEChERS TEA 茶叶专用柱,采用特定的吸附材料,能够有效去茶叶中的色素、茶多酚等干扰物,获得优异的净化效果,保证结果准确性和重现性,得到更好回收率。
适用于茶叶中有机磷、有机氯、氨基甲酸酯类残留测定,样品制备时间仅需10分钟。
订货信息
应用 | 名称 | 规格 | 货号 |
农残净化专用柱(茶叶专用) | LUMTECH Sin-QuEChERS TEA | 112-9669-362 | 30支/盒 |
中药农残净化柱 | LUMTECH Sin-QuEChERS Herb | 112-9669-367 | 30支/盒 |
农残净化专用柱(简单基质) | LUMTECH Sin-QuEChERS Nano | 112-9669-360 | 30支/盒 |
农残净化专用柱(如韭菜类、菠菜类等) | LUMTECH Sin-QuEChERS Nano | 112-9669-361 | 30支/盒 |
动物源性和油料(复杂基质)样品兽药残留分析 | LUMTECH Sin-QuEChERS Fat | 112-9669-365 | 30支/盒 |
适用于AOAC2007.01方法/盐析(茶叶、中药,部分兽药残留) | LUMTECH QuEChERS盐析包/萃取盐包 | 112-9670-110 | 50支/盒 |
适用于EN 15662方法/盐析(果蔬农残) | LUMTECH QuEChERS盐析包/萃取盐包 | 112-9670-112 | 50支/盒 |
兽药残留(复杂基质)专用盐析 | LUMTECH QuEChERS盐析包/萃取盐包 | 112-9670-111 | 30支/盒 |
联系方式
北京绿绵科技有限公司
TEL:010-82676061/2/3/4/5/6/7转207分机
E-mail:bin_qu@lumtech.com.cn
QQ:1014125976
资料类型: | NONE |
资料文件名 | 下载 |
---|---|
自动喷针定位优化纳喷雾关键参数 |
下载此篇资料 |
Establishing optimal spray conditions for nanoLC-MS is a key part of method development. Nano-ESI is dependent on a number of factors, including the effective voltage, specific dimensions of a given spray tip, effective flow rate, and mobile phase composition. All of these parameters can be tightly controlled through instrumentation software and commercially available nano-ESI emitters. The position of the emitter relative to the MS orifice plays an important role in spray optimization but is a highly subjective variable lacking in the control enabled by LC and MS instrument vendors for flow rate, applied voltage, and gas parameters. The implementation of a feedback-controlled nano-electrospray source where either the spray voltage or nanospray emitter position is under feedback control has been previously reported1. The utility of a digital-control system to map the spray current of the ESI plume under a variety of experimental conditions has been demonstrated on an LCQ DECA mass spectrometer2. Here we investigate the utility of a digital-control system for spray optimization on a 4000 Q TRAP instrument.
The effects of a laminar flow of heated nitrogen gas from the inlet and a coaxial sheath gas on spray stability and analyte signal were evaluated using commercially available peptides via syringe infusion at 300 nL/min. flow rates. Proprietary software controlling an automated XYZ translation stage was modified with a custom program written to initiate an MS acquisition. Each MS acquisition was triggered by movement to a defined set of XYZ coordinates. The custom program was used to generate a raster scan pattern of the nanospray emitter XYZ coordinates relative to the MS orifice, enabling the ability to correlate analyte signal with emitter position for a specific set of nano-ESI parameters. Using this information, a parameter and position dependent map can be generated and used for reproducible and robust nano-ESI, minimizing the need for manual optimization.