比色温度

The results show that the optimum technology is as follows: hemachrome, sodium nitrite and vitamin C should be mixed in hemoglobin solution as the mol ratio of 1∶3∶12, heating temperature is 85℃, and holding time is 15min. The chromogenic rate of the nitrosohemoglobin prepared under this condition is 90.42%.

结果表明，其最佳制备工艺为：血红蛋白溶液中所含血红素∶亚硝酸钠∶维生素C的摩尔比为1∶3∶12，加热温度为85℃，保温时间为15 min，所得半干固体亚硝基血红蛋白的发色率为90.42%。

The system is continously operated for two months and the efficiency follows: 65-68% COD〓 reduction, 89-92% BOD〓 reduction, 58-62% TOCl reduction.(The condition of treatment: 35℃-39℃, pH4. 0-4. 5, gas-water ratio: 15-20: 1, retention time: 8-12hr). After the bleaching effluents are further floculated by limewash, the drain away water basically has accorded with the national effluent discharge standard.

控制温度35℃-39℃、pH值4.0-4.5，添加少量简单的营养物、保持15-20：1的实际气水比，接触停留时间8-12小时，连续运行两个月，COD〓去除率保持65-68%，BOD〓去除率89-92%，TOCl去除率58-62%；用石灰水进行混凝后处理，可进一步去除70%COD〓、脱色率90%，SS去除率95%，排水清亮，基本达到国家废水排放标准。

The influences of the reaction temperature,re- action time and mass rat...

研究了醚化反应的温度和时间及正溴丁烷(n-C_4H_9Br)与二乙二醇单甲醚的摩尔比对DGBME收率的影响，用气相色谱法分析了产物含量，并用FT-IR和~1H NMR表征了产物结构。

The conclusions were as follows: theνO-H andνC=O IR absorption maxima shifted towards higher wave numbers after imprinting 17β-estradiol on TFMAA-co-TRIM copolymer with the red shift of theνO-H groups being apparent after precipitation polymerization for 16h while that forνC=O groups being observed after polymerization for 24h. A strong interaction between TFMAA and 17β-estradiol was confirmed by the high selectivity for 17β-estradiol, as indicted by the values of the separation factor of isomers of 17β-estradiol/17α-estradiol (2.28) and the imprinted factor (3.01). Particle diameter of TFMAA-co-TRIM polymer was between 300 nm and 1.5μm, which suited well for solid phase sorbent throughout at low column pressure. The recognition of imprinting TFMAA-co-TRIM polymer for sterol molecules was driven by enthalpy eluted with acetronitile, and low temperature was in favor of the separation of sterol structure analogues on imprinting column. TFMAA-co-TRIM polymer possessed of determinate anti-heat stability, with melting point beginning at 255.84℃, Tp=257.40℃, control TFMAA-co-TRIM polymer and imprinting TFMAA-co-TRIM polymer were respectively decompounded at 267.79℃and 343.11℃, and solid micro-extraction noddle prepared by the special polymerization also showed definite recognition for 17β-estradiol by GC/MS detecting at 270℃. By selection of various washing and elution solvents, elution reagents of close polymerization system were of more advantage in template molecules retention and recognition on molecularly imprinted solid phase extraction column. At a certain extent, progesterone, 17α-estradiol, 17β-estradiol and 4-androstene-3, 17-dione could be intercepted on the MISPE column. Especially, MISPE had high selectivity for progesterone, and imprinting TFMAA-co-TRIM polymer could achieve adsorption balance within 50 min by absorption kinetics test for 17β-estradiol. However, MISPE column showed better selectivity and enrichment property for 17β-estradiol than C18 and CSPE columns according to the data from HPLC and GC/MS analyses. Recovery of 17β-estradiol on MISPE column was up to 85.5% while when prime extracting solution of milk powder was sampled, the recovery of CSPE and C18 columns were 43.7% and 30.7%, respectively.

通过研究阐明：紫外聚合产物TFMAA-co-TRIM中的νO-H振动吸收峰在聚合16h后红移，νC=O振动吸收峰在聚合24h后红移；TFMAA-co-TRIM对雌二醇异构体的印迹因子达到了3.01，α为2.28，优于其它功能单体参与得到的聚合物识别特性；TFMAA-co-TRIM聚合物粒径介于300 nm至1.5μm之间，作为色谱固定相具有良好的通量和低的柱压；在乙腈流动相中，TFMAA-co-TRIM分子印迹固定相的分离过程主要被焓驱动，低温有利于分子印迹固定相分离甾醇结构类似物；TFMAA-co-TRIM分子印迹聚合物在255.84℃时开始熔融，Tp=257.40℃，聚合物CP的降解温度在267.79℃，MIP降解温度在343.11℃，制备的固相微萃取头初步经GC/MS 270℃的耐热性测定；不同的洗提溶剂筛选证明了选择接近聚合溶剂的洗脱体系更有利于MISPE发挥识别效应；分子印迹固相萃取柱对孕酮、17α-雌二醇、17β-雌二醇和雄烯二酮都具有不同程度的保留特性，可作为此类化合物的吸附材料，特别对孕酮强保留的富集特性，可作为孕酮的选择性识别吸附剂，其分子印迹聚合物对17β-雌二醇的吸附动力学测定显示在50 min内基本达到吸附平衡，具有作为传感器核心敏感材料的潜力；对比萃取奶粉中17β-雌二醇性能，MISPE柱比非分子印迹固相萃取柱和C18柱具有更高的保留，回收率依次为85.5%，43.7%和30.7%。

The optimum conditions for extraction was proved practicable by condition filtration and orthogonal design with supersonic wave method .The results showed that the optimum conditions for extraction to ultrasonic method is : methanol (φ=40,20ml),and 15℃ for 30 min ,this paper has determined nicotine contents that is 23.50mg/g at absorption peak (λ=262nm) by HPLC with an eluent consisting of methanol –potass Phosphate alleciate (pH=3) with the recovery and coefficient of variation are 101.52% and 0.91%.

通过超声波提取方法进行条件筛选和正交化实验，确定了烟草中尼古丁的最佳提取条件，结果表明，超声波最佳条件是：甲醇浓度40%，固液比1：20，提取时间30 分钟，超声温度15℃，用高效液相色谱方法在波长262nm 处测定尼古丁的含量，流动相组成为甲醇：磷酸二氢钾缓冲溶液=10：90，测得烟草中尼古丁的含量为23.50 mg/g，平均回收率为101.52%，相对偏差为0.91%。

Mainly in the corona being, but often associated with chromospheric connected to the lower density than the surrounding corona, large 103-104 times, the temperature of about 70K.

主要存在于日冕之中，但下部常与色球相连，密度比周围的日冕大103—104倍，温度约70K。

The blue crosslinking polymeric dyes were synthesized with use of leucoquinizarin and polyvinylamine prepared from the Hofmann degradation of polyacrylamide. The maximum wave length was 597nm. The effects of temperature, the concentration of amino group, the pH value and the mole ratio of leucoquinizarin to amino group on the yield of red crosslinking polymeric dye were discussed.

以具有不同聚合度和不同胺化度的聚乙烯胺为骨架，以1，4—二羟基蒽醌隐色体为原料合成了蓝色可交联高分子染料，该染料的最大吸收波长为597nm，研究了反应温度、氨基浓度、pH值以及1，4—二羟基蒽醌隐色体与聚乙烯胺中氨基的摩尔比对反应的影响。

The result indicates the best conditions are: when the solvent is water the weight of the water is 8 times than of the Lithocarpus polystachyus Rehd, the temperature of the water is 60℃, the period of the extraction is 60 min,then the content of dihydrocharcone can reach 5.26%....

结果表明，二氢查耳酮的最佳提取条件为：1∶8的料水比，在80℃温度提取60min，二氢查耳酮的提取率达5.26%。用高效液相色谱法检测，二氢查耳酮含量为98.37%。

The optimum technology of extracting flavonoids in polygonatum was studied by orthogonal test.

用正交试验法对玉竹中的黄酮类化合物的提取工艺进行了优选研究，采用正交表L16(4^5)，以提取时间、提取温度、提取次数、提取剂中乙醇含量以及料液比为因素，以总黄酮显色液的吸光度为指标进行试验。

The paper discussed different effects (such as oil-water ratio, extraction ,mixing time, equipment time and so on) on the removal efficiency of COD and the acidity of raffinate, and the effect of active carbon dosage and temperature on the discoloring efficiency.

实验探讨了油水比、萃取混合时间、静置时间等因素对COD去除率及酸度的影响，研究了活性炭加入量及温度对脱色效果的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。