| 查看: 928 | 回复: 1 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
[求助]
翻译一段话，谢谢
|
||
| The oils were partitioned into heptane and aqueous methanol (MeOH 1 phase, Fig. 1). The heptane phases of selected oils were further partitioned into methanol (MeOH2 phase) andheptane, to increase the extraction recovery for arsenic into methanol. The heptane phases were partitioned into acetonitrile (ACN) and heptane, to further increase the extraction recovery of arsenic into apolar solvent. Acetonitrile was selected as third solvent as it is more non-polar compared to methanol and has a different selectivity than methanol [34]. MeOH1, MeOH2 and ACN phases were analyzed for total arsenic. The MeOH1 phase of all fish oils were analyzed by reversed-phaseHPLC–ICP-MS, and the arseno- lipids were quantified using DMA and Ph3AsO. The arsenolipids in the MeOH1 phase of selected fish oils were also quantified using a synthesized AsHC compound (dimethylarsinoylnonadecane; AsHC–C19). The MeOH1 phases of selected fish oils were analyzed by HPLC coupled to quadrupole Time-of-Flight Mass Spectrometry (qTOF-MS) for identification of the molecular structures and determination of accurate masses of the arsenolipids present. All MeOH 2 and ACN phases of selected fish oils were analyzed by reversed-phase HPLC–ICP-MS. |
回复此楼» 猜你喜欢
333求调剂
已经有9人回复
-
070300化学学硕311分求调剂
已经有3人回复
-
321求调剂
已经有13人回复
-
348求调剂
已经有4人回复
-
0703化学
已经有8人回复
-
材料调剂
已经有11人回复
-
081700学硕，323分，一志愿中国海洋大学求调剂学校
已经有10人回复
-
0703求调剂383分
已经有7人回复
-
0703化学调剂325分
已经有4人回复
-
329求调剂
已经有15人回复
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
美丽菲菲: 金币+30, 翻译EPI+1, ★有帮助, 谢谢，但还不够流畅哦 2018-02-28 23:14:02
美丽菲菲(fjtony163代发): 金币+40, 代发 2018-04-16 03:43:50
fjtony163: 翻译EPI+1, 代发 2018-04-16 03:43:57
fjtony163: 翻译EPI-1, 多发了一个epi 2018-04-16 03:44:18
美丽菲菲: 金币+30, 翻译EPI+1, ★有帮助, 谢谢，但还不够流畅哦 2018-02-28 23:14:02
美丽菲菲(fjtony163代发): 金币+40, 代发 2018-04-16 03:43:50
fjtony163: 翻译EPI+1, 代发 2018-04-16 03:43:57
fjtony163: 翻译EPI-1, 多发了一个epi 2018-04-16 03:44:18
| 将油分配到庚烷和甲醇水溶液（MeOH 1相，图1）中。所选油的庚烷相进一步分配到甲醇（MeOH2相）和庚烷中，以提高砷回收甲醇的萃取回收率。将庚烷相分配到乙腈（ACN）和庚烷中，以进一步提高将砷提取回到非极性溶剂。选择乙腈作为第三溶剂，因为它与甲醇相比非极性更强，并且具有与甲醇不同的选择性[34]。分析MeOH1，MeOH2和ACN相的总砷。通过反相HPLC-ICP-MS分析所有鱼油的MeOH1相，并且使用DMA和Ph3AsO定量砷 - 脂质。也使用合成的AsHC化合物（二甲基胂基十一烷; AsHC-C19）对所选鱼油的MeOH1相中的砷脂进行定量。选择的鱼油的MeOH1相通过与四极杆飞行时间质谱（qTOF-MS）偶联的HPLC分析以鉴定分子结构并确定存在的砷脂的精确质量。通过反相HPLC-ICP-MS分析所选鱼油的所有MeOH 2和ACN相。 |
2楼2018-02-28 21:21:15
