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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
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双柱切换纳喷源改善蛋白组分析的通量 |
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On-column injections using packed-tip columns realize optimal chromatographic separation and sensitivity for nanoLC-MS experiments. The unique packed-tip column format adds no post-column volume to the LC plumbing thus providing the sharpest peak shape achievable given the packed column’s specifications (internal diameter and stationary support). Qualitative and quantitative separations of complex biomolecular samples usually depend on long gradients to maximize the separation capacity of the column and improve the recovery of low concentration analytes. While nanobore columns enable nanoliter flow rates, the ability to sample load onto the column is limited by the backpressure of the column. Trap column injection is one approach to enable the ability to sample load at higher flow rates but the resultant peak broadening decreases sensitivity. Here, we present a hardware solution utilizing an automated XYZ translation stage digitally controlled by a graphical user interface. This system enables automated cycling between multiple columns, as controlled by an external device, most commonly the MS or the LC system. Duty cycle improvement is demonstrated by loading, washing and equilibrating one column off-line while the second column gradient elutes. Challenges to the dual column approach include optimizing the flow path to ensure column-to-column reproducibility and creating an optimized autosampler method to control for analyte carryover. Solutions to these challenges are presented for a Thermo LTQ MS connected to a direct flow nanopump using commercially available peptide digests. With each column at voltage during MS acquisition, the presence of cross talk between the two columns was evaluated using syringe infusion.