七氯

By capillary gas chromatography of soil and bellflower in the content of DDT and heptachlor.

采用毛细管气相色谱法测定土壤和桔梗中七氯和滴滴涕的含量。

Seven central depressants,including chloral hydrate,potassium bromide,sodium bromide,cal- cium bromide,alcohol,amytal and chloretone, were studied for their effects on the intraperito- neal toxicity of tartar emetic and sodium stibo- gluconate in mice.

1。关于吐酒石与葡萄糖酸锑 V 钠对小白鼠的致死作用，我们探索了一些中枢抑制药与兴奋药的影响。所试的抑制药有水合氯醛，溴化钾，溴化钠，溴化钙，酒精，安眠妥与三氯叔丁醇七种。兴奋药有苯甲酸钠咖啡硷与士的宁二种，以及溴咖合剂。2。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

The 7-bromo group was replaced with various aniline, and then treated with 4-methoxybenzenesulfonyl chloride to afford the 6-azaindole-1-sulfonamides.The synthesis of 7-aryl-6- azaindole-1- sulfonamide derivatives were prepared by a Suzuki reaction at 7-position, utilizing the 7-bromo-6-azaindole was treated with a variety of phenylboric acid to give the designed 7-aryl substituted 6-azaindoles.

将七号位碳上的溴基取代成各种苯胺类衍生物，再与4-甲氧基-磺基氯苯反应得到6-氮基吲哚-1-磺胺。7-苯基-6-氮基吲哚-1-磺胺类衍生物的合成是以7-溴基-6氮基吲哚-1-磺胺为起始物和各种苯硼酸经由铃木偶合反应在第七号位碳上，得到在第七号位碳上有苯基取代的6-氮基吲哚-1-磺胺。

Top soil samples were collected from Hebei province and the contents of heptachlor were measured.

在河北省境内采集207个表层土壤样品，测定其中的七氯含量。

Using heptachlor epoxide as interal standard, the linearity of 28 pesticides were good with 〓 in 0.99～1. 000, except phosphamdon with 〓 at 0.963. The RSD for most pesticide were below 10％.

采用该方法，以环氧七氯为内标，29种农药中28种农药的线性关系良好，〓在0.99～1.000之间（磷胺的〓为0.963），大部分农药的RSD0％。

Numerous microbial cultures convert heptachlor to its expoxide.

许多微生物培养基可以把七氯转化为它的环氧化物。

In addition, pesticides can also abnormal sperm, and lead to miscarriage, stillbirth, birth defects, such as benomyl, DBCP, methylmercury, such as epoxy heptachlor.

另外，农药也可使精子异常，而导致流产，死胎、新生儿缺陷，如苯菌灵、二溴氯丙烷、甲基汞、环氧七氯等。

Because the concentrations of heptachlor, aldrin, o, p-DDT, p, p'-DDE and p, p'-DDT in SPMD are lower than those in water, these contaminants are not suitable to be sampled by this SPMD. The results of field experiment done at the Liangshui river prove the feasibility of SPMD used in groundwater monitoring. But detailed work is needed to be done in order to explain some unusual field experiment results.

七氯、艾氏剂、o，p-DDT、p，p'-DDE以及p，p'-DDT组分在膜中的平衡浓度远小于它们在水中浓度，不适于用此种半透膜取样器进行富集；在凉水河岸边的野外实验结果也验证了半透膜装置监测地下水有机氯农药的可行性，但其个别组分的结果出现异常，需要在该地区进一步开展工作进行研究。

Pesticides were extracted from tea with hexane-acetone (volume ratio is 1:1) in an ultrasonic bath and cleaned up on a Florisil and neutral alumina column, then were determined by gas chromatography with negative chemical ionization mass spectrometric detection in the selected ion monitoring mode, and with heptachlor epoxide as the internal standard. Spiked blank samples were used as standards to counteract the matrix effect observed in the chromatographic determination.

茶叶试样用V/V=1/l混合提取剂超声提取，经Florisil矽藻土和中性氧化铝混合层析柱净化后，以环氧七氯为内标物，采用GC-NCI-MS的选择离子监测方式分析；探讨了茶叶试样的基体诱导色谱响应增强影响所产生的分析误差及其减小的措施，用空白试样基体匹配校准曲线法定量分析。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。