作业帮英语翻译he appropriate working standard solutions for fortification and external calibration curves were prepared daily by diluting the stock solution with HPLC water.The following solvents and reagents were used:(a) sodium dihydrogenphosphate mo
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英语翻译he appropriate working standard solutions for fortification and external calibration curves were prepared daily by diluting the stock solution with HPLC water.The following solvents and reagents were used:(a) sodium dihydrogenphosphate mo
英语翻译
he appropriate working standard solutions for fortification and external calibration curves were prepared daily by diluting the stock solution with HPLC water.The following solvents and reagents were used:(a) sodium dihydrogenphosphate monohydrate (100%; Roth); (b) sodium hydroxide (99%; Merck);
(c) formic acid (98–100%; Merck); (d) sodium hydroxide solution (5 M); (e) sodium hydroxide solution (0.2 M); (f)phosphate buffer (0.05 M,pH 8.5; weigh 6.9 g of sodium dihydrogenphosphate monohydrate,add ca.700 ml of water,adjust pH to 8.5 with 5 M sodium hydroxide solution and dilute to 1000 ml with water); (g) mobile phase A:0.005%(v/v) formic acid in water; (h) mobile phase B:methanol;(i) solid-phase extraction (SPE) cartridges:Oasis HLB(polymeric sorbent) 60 mg (Waters).Silanised pear-shaped flasks:fill flasks with a solution of dimethyldichlorosilane in 100 ml toluene,let stand 30 min,and rinse successively
with toluene,absolute methanol and water.
英语翻译he appropriate working standard solutions for fortification and external calibration curves were prepared daily by diluting the stock solution with HPLC water.The following solvents and reagents were used:(a) sodium dihydrogenphosphate mo
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PCL：采用支持Printer Engine技术的HP PCL.这意味着需要包含关于物理打印机的必要信息.
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