网页2021年9月27日 · The development of a simple HPLC method for detection of the sea lamprey pheromone 3-ketopetromyzonol sulfate (3kPZS) is reported. The ketone moiety of the bile alcohol reacts readily with 1-dimethylaminonaphthalene-5-sulfonyl (dansyl) hydrazine to form the hydrazone. This hydrazone has a strong UV absorbance at 333 nm and

网页Agricultural Research Service, USDA c/o National Museum of Natural History Washington, DC,20560-0168 (Received March8, 2000; accepted November7, 2000)

网页2020年7月23日 · Jul. 23rd, 2020. What is a HPLC Vial Septa? By definition, According to the definition, Septa is a circular gasket made of Silicone or silica gel. In HPLC analysis,

网页Field trapping studies were conducted with rubber septa and string formulations of the pheromone and included dose-response, pheromone purity, and dispenser-aging trials. It was found that traps baited with 250 µg of pheromone of 91–94% isomeric purity (main impurity presumably being the 13 E isomer) on rubber septa are suitable for monitoring

网页Rugged GC/MS/MS Pesticide Residue Analysis Fulfilling the USDA Oct 11, 2012 Gas saver. 20 mL/min at 5 minutes. Septum purge flow. 3 mL/min. Air cooling. On at 100 C. GC

网页2022年11月9日 · PTFE / Silicone septa (T/S) are the most useful for HPLC applications as they have wide chemical compatibility and low extractables (I recommend them for

网页2014年6月1日 · Effectiveness of Adult Weevil Trapping on Damage to Sweet Potato. At both locations, the number of C. formicarius adults collected in traps fluctuated dramatically among sampling dates in repeated measures during the 4-mo duration of the experiment, ranging from 30.2 ± 5.6 to 1515.6 ± 57.8 per trap in Yigo and from 28.1 ± 4.9 to 1497.6 ±

网页Gray PTFE/Molded Black Butyl (Pharmafi x) Septa -20 +125 -4 +257 Black Rubber Septa -20 +100 -4 +212 *This septum is used for liquid injection. 20mm version is not available.

网页on filter paper or rubber septa and placed in field traps. The absolute config- uration at the C-6 and C-12 positions was not established. Key Words--Sex pheromone, 6,12

网页2009年3月24日 · Abstract Bioassays of six racemic synthesized candidate sex pheromone compounds against male New World screwworm Cochliomyia hominivorax (Coquerel) flies showed that the most potent bioactivity was found with 6-acetoxy-19-methylnonacosane and 7-acetoxy-15-methylnonacosane compared with four other isomeric acetoxy

网页2021年11月4日 · The development of a simple HPLC method for detection of the sea lamprey pheromone 3-ketopetromyzonol sulfate (3kPZS) is reported. The ketone moiety of the bile alcohol reacts readily with 1

网页USDA Agricultural Research Service National Center for Agricultural Utilization Research 1815 N. University Street. Peoria. lllinois 61604 (Received March 9. 1993; accepted May

网页2022年10月30日 · Here, we report three new contact pheromone components produced by female false black widow spiders, Steatoda grossa: N-4-methylvaleroyl-O-butyroyl-L-serine, N-4-methylvaleroyl-O-isobutyroyl-L

网页131 pheromone mating disruption formulations (PBC, 2002). 132 133 International 134 CODEX – Not specifically listed. 135 EU 2092/91 – Not specifically listed. 136 IFOAM – Not specifically listed. 137 Canada – 139 140

网页Field evaluation of the 1:1 mixture of (Z,E)-5,7-dodecadienol and (Z,E)-5,7-dodecadienal with the Siberian moth in Russia showed that the rubber septa pretreated with compound and stored at −80 C were as effective as freshly