色质

Samples were prepared by protein precipitation with acetonitrile and defatting with n-hexane. The analytes were detected with API 4000 triple quadrupole tandem mass spectrometer equipped with ESI source in the positive ion mode.

猪肉样品中加入乙腈沉淀蛋白，经正己烷脱脂后，采用液相色谱-三重四极杆串联质谱检测，使用电喷雾离子化源，在正离子条件下以多反应监测方式进行扫描。

Methods:For clean-up and concentration solid phase extraction with OASIS HLB cartridges were used,or membrane filter was used to remove dirties.

水样经Waters Oasis HLB 固相萃取净化，应用超高效液相色谱/电喷雾串联四极杆质谱仪多离子反应监测定量法检测莠去津、灭草松，建立了定量检测生活饮用水中莠去津、灭草松的快速、准确、高灵敏度的方法。

Paint color chip; distempers Mastics films; gravure inks

色片制墨，一种与传统砂磨制墨有着质飞跃的产品。

The fatty acids in the oil were esterified by sodium hydroxide-methanol, and then analyzed by gas chromatography-mass spectrometry.

方法采用索氏提取法提取其脂肪酸，再进行甲酯化处理，以气相色谱质谱联用仪进行了分离和鉴定。

But the miniplate became even softer,still opaque and easy to break with some gabs on the surface six months later.The miniplate became into something like cheese,softer and exquisite twelve months later.

扫描电镜观察可见散在的比较表浅的小裂纹和凹槽；植入后6个月时，大体观察见接骨板表面已经变成白垩色，质硬，不透明，易折断，其上有裂纹。

Methods: The medicinal plant Rheum wittrochii Lundstr., was genetically with Ri plasmid harbouring in Agrobacterium rhizogenes 9402 strain to induce hairy roots; transformed the opines from the hairy roots were assayed by paper electrophoresis; the contents of free anthroquinones such as aloe-emodin, rhein, chrysophanol, emodin, physcion, 8-O-methylchrysophanol from the hairy roots were quantitatively determined by HPLC technique.

用发根农杆菌Agrobacterium rhizogenes 9402 所含Ri质粒遗传转化药用植物天山大黄以诱导发根用纸电泳法检测发根中冠瘿碱的存在；用高效液相色谱法测定发根中芦荟大黄素、大黄酸、大黄酚、大黄素、大黄素甲醚、大黄酚-8-甲醚等游离蒽醌化合物的含量。

The extract was dried under nitrogen stream, redissolved in the mobile phase and defatted with n-hexane saturated by acetonitrile.

利用超高压液相色谱－电喷雾串联四极杆质谱联用技术，建立了一种能在10 min内快速分离和测定牛奶中24种磺胺类药物残留的方法。

The sample was extracted by deionized water. The extract was cleaned up and concentrated on a SPE column, then eluted by methyl-tert-butyl ether. The elution was concentrated under nitrogen and redissolved to 1 mL.

样品中24种目标物用蒸馏水浸出后，经固相萃取小柱富集净化，再用叔丁基甲醚洗脱，洗脱液氮吹浓缩定容后用气相色谱－质谱法测定。

The combined extract was concentrated to dryness and redissolved in acetonitrile, then cleaned up by dispersive solid-phase extraction with sorbents of N-propyl ethylene diamine, graphited carbon black, and C18, and determined and confirmed by GC-NCI/MS.

样品经乙腈提取并浓缩后加入N-丙基乙二胺、石墨化碳黑和C183种填料进行分散固相萃取净化，气相色谱-负化学离子源质谱分时段选择离子监测技术测定与确证，外标法定量。

The sample was redissolved in the acetonitrilved in the acetonitrile-water (3:2, v/v), then analyzed using LC-MS/MS in multiple reaction monitoring mode via positive electrospray ionization with an Agilent ZORBAX SB-C18 column as the analytical column.

样品用1%醋酸乙腈溶液萃取，经Waters Sep-Pak Vac固相萃取柱净化，乙腈－甲苯（体积比为3：1）洗脱，旋转蒸发浓缩，用乙腈－水（体积比为3：2）溶解，以Agilent ZORBAX SB-C18色谱柱分离，以电喷雾电离串联质谱在正离子多反应监测模式下进行测定。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。