比色的

High performance liquid chromatography was used to detect concentration of BP in the air of working sites and level of urinary 1-hydroxypyrene (1-OH-Py) of workers. Contents of acetylcholine in blood filtrate and activities of erythrocyte acetylcholinesterase were determined by Alky hydroxylamine chromatometry and DTNB methods, respectively.

用高效液相色谱法测定各组工作场所空气中BP的浓度，并对工人尿中1-羟基芘(1-OH-Py)的水平进行检测；分别用碱性羟胺比色法和二硫代二硝基苯甲酸法测定全血滤液中乙酰胆碱的含量和红细胞乙酰胆碱酯酶的活性。

Methods MTT colorimetric assay was used to test in vitro cytotoxicities of the chemotherapeutics against human hepatoma cell lines.

采用MTT比色分析法测定多柔比星或米托蒽醌对体外培养的4株人肝癌细胞的细胞毒作用。

The theory about electromotion effect on the interface between gas and water, formation of ion wind during corona discharge and double film absorption is used to explain the effect of simultaneously desulfuration and denitration in the gas and water phases.

在汇总和分析了羟自由基的测定方法的基础上，以产生羟自由基的Fenton 反应为研究对象，建立了以溴酚蓝为显色剂的基于比色法的放电条件下羟自由基测定体系，实验证明电晕放电下水中产生的羟自由基强化了烟气中的脱硫脱硝效果。

Observe pink dianthus on the ninth day,Pink dianthus ' s color in huaxianzi keepfresh liquid more turkey red, Open degree more good,Than in clear water, Kunming produce's,Holland' antistaling agent of all-purpose; Observe peachblow dianthus in huaxianzi,after open it＇petal diameter than other keep fresh liquid more 2.5CM.

粉色多头康在第九天观察时，花鲜子中的粉多头康颜色要比清水、昆明产、荷兰产保鲜液中的鲜红的多、开放度要好；观察到花鲜子中的桃红色多头康开放后的花瓣直径平均比其他保鲜剂多出2.5厘米，比清水的多出4.8厘米，且颜色非常鲜艳，其他的均变为紫红色。

Guangdong college of pharmacy,guangzhou,guangdong 510006,china;henan university of traditional chinese medicine,zhengzhou,henan 450008,chinaabstract:objective to establish a method for the determination of the content of total alkaloid in nao mai tong recipe.methods acid dye colorimetry was used in the determination with bromocresol green buffer solution as the color developing agent with absorbance was determined at the detection wavelength of 417 nm.results the calibration curve of the absorbance was linear with the concentration of ligustrazine in the range of 0.031～0.153 mg/ml(r=0.9998).the average recovery of ligustrazine was 100.95％,rsd=1.75%.

作者单位：广东药学院中药化学与分析教研室，广东广州 510006；河南中医学院，河南郑州 450008 目的建立脑脉通有效部位中总生物碱的含量测定方法。方法采用酸性染料比色法，以溴甲酚绿缓冲液作为生物碱的显色剂，测定样品溶液在417 nm波长处的吸收度。结果对照品川芎嗪质量浓度在0.031～0.153 mg/ml的范围内与吸光度呈良好的线性关系，r=0.9998。平均回收率为100.95％，rsd为1.75％。精密度和稳定性良好。

MethodsIn the solvent of 1 mol/L NaOH, using the reaction of the water-soluble phenolic acidity in Radix Salviae Miltiorrhizae and the NaNO_2-Al(NO_3)_3, the total components of water-soluble phenolic acidity in Radix Salviae Miltiorrhizae injections and drip solution(calculated with protocatechualdehyde) were determined by colorimetric s...

方法利用丹参中水溶性酚酸类成分与亚硝酸钠和硝酸铝溶液在碱性条件下的显色反应，比色法测定该两种制剂中水溶性酚酸的总量。结果原儿茶醛在3.336~14.46mg/L范围内呈良好的线性关系，回归方程为：A=0.02777C+0.01279(r=0.9996)，加样平均回收率为100.8%，RSD为0.96%。结论该法简便快速，结果准确，重现性好，可用于该制剂的质量控制。

Results L* in pat of opaque and body become decrease and a*,b* become increase generally with the increase of each group of color guide stage,then a*、b* of incisor translucent and cervical increase tendency unapparently.

结果 随着A、B、C、D各组比色板色阶的增大，不透明瓷、牙本质瓷的L*值呈递减趋势，a*、b*值呈递增趋势，但是颈部瓷、透明瓷的a*、b*值的递增趋势变化不明显。

Note that the overall reaction for this fermentation cannot involve the consumption of nicotin -amide coenzymes or citric acid cycle intermediates.

标明这个发酵的所有反应不包括尼克酰胺辅酶或者三羧酸循环中间产物的消耗。比色法涉及氟离子对预先形成的颜色的消色作用。

The feasibility of determining the pentosan in pre-extraction liquor from eucalyptus chips by using Douglas colorimetric method was discussed in this paper. The visible spectrums of xylose, glucose, mannose, galactose and kraft lignin were compared under the same color reaction conditions. The results showed that the disturbance from hexoses and lignin can be eliminated when the pentosan is identified and determined by the maximal absorption at 553nm.

摘 要：探讨了 Douglas 比色法用于测定桉木半纤维素预提取液中戊聚糖的可行性，通过对木糖、葡萄糖、甘露糖、半乳糖和木素在相同条件下显色反应后的谱图进行比较，证明利用553 nm 处的最大吸收进行测定可以排除己糖和木素的干扰。

State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640) The fcasibility of determining the pentosan in pre-extraction liquor from eucalyptus chips by using Douglas colorimetric method was discussed in this paper.

探讨了Douglas 比色法用于测定桉木半纤维素预提取液中戊聚糖的可行性，通过对木糖、葡萄糖、甘露糖、半乳糖和木素在相同条件下显色反应后的谱图进行比较，证明利用553 nm处的最大吸收进行测定可以排除己糖和木素的干扰。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。