分光光度法测定银杏中有机锗

本文用分光光度法测定银杏中的有机锗含量。结果表明，灰化法操作简单、准确，方法回收率为99．24％－100．26％，结果满意。     

发射光谱法测定矿样中的铌和钽

本文研究了用碳粉和二氧化铪作用缓剂同时测定矿样中的铌和钽的发射光谱法，选择铪作内标线，不需分离、不需化学处理，直接压样于杯形的石墨电极中，方法简便、快速、准确。铌和钽的线性范围分别为05－0.25％，0％－0.125%。铌和钽的检测限分别为0.003%,0.001%，用于样品的测定取得了满意的结果。     

ICP—AES法直接测定铋矿石中铋

本文研究了用ＩＣＰ－ＡＥＳ法直接测定铋矿石中铋含量的方法，优化了仪器的测试条件，并对共存元素的干扰情况进行了研究，该方法简便，快速，可直接用于铋矿石中铋的准确测定，结果满意。     

乳化法-FAAS法测定奶茶粉中的钙

本文采用乳化法将奶茶粉样品用乳化剂OP乳化成分散均匀且稳定的乳浊液，直接喷入空气－乙炔火焰中，以标准加入法测定钙含量。测定结果与灰化法一致，检出限0.021μg·mL^-1，RSD小于2.84%，方法简便、快速、准确。     

涂锆石墨管石墨炉原子吸收法测定水样中的有机锡和无机锡

本文用涂锆石墨管石墨原子吸收光谱法直接进样测定了样品中总锡含量,用氢化物发生－有机溶剂萃取石墨炉原子吸收光谱法测定了样品中有机锡,并通过差减法求得无机锡含量,无机锡和有机锡的测定检测限分别为２７ｐｇ和５８ｐｇ,精工为２．０４％和２．１３％,该方法可用于不同水样中有机和无机锡的测定,回收率在９０．５％－９８．５％之间。     

同时采用P矩阵法和多波长直线回归法测定脑清片中两组分…

本经选择适当的测定波长，同时采用Ｐ－矩阵法和多波长直线回归法测定脑清片中氢基比林和咖啡因的含量，两个方法简便，快速，准确，样品测定结果均和北京市药品标准测定结果一致。     

同时采用三种方法测定热痛灵注射液中二组分的含量

本文经选择适当的测定波长，同时采用多波长直线回归，Ｐ－矩阵法和联立方程组新解法测定热痛灵注射液的含量。三咱方法简便、快速、准确，样品测定结果均和北京市药品标准法测定结果一致。     

分子筛和担体中主含量元素和杂质元素的同时测定

本文研究了用微波消化试样，ICP－AES法同时测定分子筛及担体中的主含量元素Si、Al和杂质元素Fe、Na、Ca、Mg的方法。相对标准偏差：Si、Al＜2％，Fe、Na、Ca、Mg≤4％，杂质元素回收率为97％－107％。方法快速，简便、准确，可靠。     

固态检测器—ICP—AES中的计算机差谱改进技术——I.原理和实验

本文使用固态检测器－光是二极管阵列（ＰＤＡ）或电荷耦合器件（ＣＣＤ）在ＩＣＰ－ＡＥＳ上实现了无需基体浓度情况下对复杂组分中微量元素进行测定的计算机差谱改进法。用Ｃ语言编实施差谱技术以及实验室例行分析的软件，探讨了方法的原理，对Ｖ基体中Ａｌ，Ａｌ和Ｍｇ基体中Ｖ的测定结果表明，该差谱技术能准确消除复杂基体产生的光谱干扰。     

ICP—AES法同时测定掺质钒酸钙晶体中的钙,钒,钕,镱,锗

本文采用ＩＣＰ－ＡＥＳ法同时测定了掺质Ｃａ３（ＶＯ４）２，晶体中Ｃａ，Ｖ，Ｎｄ，Ｙｂ，Ｇｅ的含量，选择了合适的分析谱线和积分时间，试样用硝酸溶解后直接测定，方法简便，准确，快速，合成试样中各被测元素的回收率为９８％－１０４％，相对标准偏差〈４．０％，Ｎｄ，Ｙｂ，Ｇｅ的检出限为０．０００２－０．０１８μｇ／ｍＬ。     

氢化物发生-原子荧光法测定污泥中的痕量汞

针对污泥中复杂基质的特点,进行了三种样品湿法消解体系、还原剂、载流等实验条件的研究,确定了HNO₃-HClO₄湿法消解体系、5%硝酸载流和0.1%硼氢化钠还原剂、以及标准和样品中5％硝酸+0.05%重铬酸钾混合溶液的酸度介质等,用以测试污泥中痕量Hg的实验条件。该方法快速、准确,易操作,检出限为0.06 μg·L-1,连续11次测定4.0 μg·L-1Hg标准溶液相对标准偏差为2.0%,实验建立的氢化物原子荧光(HG-AFS)测定污泥中痕量Hg的测试方法具有较好的应用前景。     

单缝石英管原子捕集原子吸收光谱法测定净水剂中铅

本文研究了单缝石英管贫焰捕集 脉冲富焰释放原子捕集原子吸收光谱法测定净水剂中的铅 ,对测定条件和干扰元素进行了探讨 ,拟定了简便、快速测定净水剂中铅的新方法。本法线性范围为 0～ 10 0 μg·L-1,回收率为 97%～ 10 3% ,相对标准偏差为 2 6 %～ 2 8% ,用于实际样品中铅的测定 ,结果满意     

Method for producing graphite and alumina thin films

A simple comprehensible method for producing graphite and alumina films has been suggested. The optical properties of a graphite suspension in toluene and a suspension of natural clay with a high content of alumina particles in water have been studied. It has been found that the optical density of the suspensions varies from layer to layer, and the lowest optical density has been observed in upper layers. Graphite and aluminum films have been prepared by taking samples from different depths. The microstructure of the films has been examined. It has turned out that alumina particles coalesce into regularly shaped objects in the form of snowflakes. In addition, alumina films obtained from samples taken from different depths of the suspension have different thicknesses. In thin and thick films, the particle size is 0.29 and 2.81 μm or more, respectively.     

析相萃取火焰原子吸收法测定矿样中的锌

非离子表面活性剂的水溶液在温度升高达到其浊点时会形成胶束相析出。文章研究了利用其浊点使待测离子的络合物富集在胶束内一起析出 ,进行析相萃取分离富集后 ,应用火焰原子吸收光谱法测定矿样中锌的新方法 ;着重讨论了采用TritonX 10 0做析相剂、正辛醇降低浊点和析出相的密度以及络合剂的选择、酸度及振荡次数的影响等析相萃取条件。方法检出限为 0 0 0 5 μg·mL-1。用于岩矿中锌的分析测定 ,结果令人满意     

电感耦合等离子体-原子发射光谱法测定红景天中锌、铁、锰和钛

用电感耦合等离子体-原子发射光谱法测定红景天中锌、铁、锰和钛等元素。使用与分析样品基体相接近的标准样品和控制一致的测定条件,克服了物理干扰和基体效应的影响,选择波长为233.0,273.9,257.6,334.9nm4条谱线分别作为测定锌、铁、锰和钛的分析线,测得4种元素的检出限(3s)为0.004—0.05μg/mL。本法测定红景天中4种金属元素的含量,相对标准偏差(n=7)在2.2%—4.2%之间,加标回收率在96.4%—115.2%之间。     

On-Line Particle Size Analysis Using Ultrasonic Velocity Spectrometry

A new method is described for the determination of particle size distribution of slurries based on ultrasonic velocity spectrometry combined with gamma-ray transmission. This method shares the advantages of ultrasonic attenuation spectroscopy of being capable of analyzing highly concentrated samples without dilution. However the ultrasonic velocity method is better suited to fine particles of diameter from about 0.1 to 30 μm, a greater volume of slurry is analysed and therefore sampling errors are reduced, and precise theoretical models are readily available to permit the accurate determination of size distribution by inversion of ultrasonic velocity measurements. The method can also be used to accurately determine particle size cut points by linear correlation. Using either inversion or correlation methods, the accuracy of particle size information from ultrasonic velocity spectroscopy is significantly enhanced by the independent measurement of solids loading by gamma-ray transmission. In addition, larger sizes can be measured by combining the ultrasonic velocity method with ultrasonic attenuation measurements. The method has been tested in the laboratory on a wide variety of mineral and paint slurries. The method determined the size distribution of single component silica and alumina samples in water in agreement with laser diffraction measurements and the method successfully distinguished well and poorly dispersed TiO₂ suspensions. For composite samples the method discriminated separate TiO₂ and CaCO₃, components and determined their proportions to within 0.25% volume. In addition the method, in combination with ultrasonic attenuation measurements, determined the size fractions of iron ore slurries below 10 and 30 μm to within 1.3% and 1.0% relative respectively, when compared with laser diffraction measurement of particle size. The CSIRO is presently designing an industrial gauge which will be manufactured and installed in an industrial slurry stream in 1997.     

ICP-AES法直接测定地热温泉水样中的钾、钠、钙、镁、硅、锂、硼的研究

采用顺序扫描式ＩＣＰ光谱仪,直接测定了地热温泉水样中的７种元素,并对最佳测试条件的选择进行了探讨,方法简便,快速、准确,检出限及精密度均可满足分析要求。     

乘子罚函数分光光度法同时测定复方阿斯匹林片中的三组分含量

用乘子罚函数法处理多波长分光光度数据同时测定复方阿斯匹林片中三组分的含量,模拟样品中阿斯匹林、非那西丁、咖啡因的平均回收率分别为100．4％、99．78％、100．6％,相对标准偏差分别为0．45％、0．56％、1．17％。对4个批号实际样品中的测定结果与标准方法的测定结果吻合。     

ICP-AES法测定松香中铁、铅、铜、锌、铝

本文研究了用ICP－AES法测定松香中的铁、铅、铜、锌、铝的方法，确定了松香中杂质元素同时测定的最佳工作条件，并对实际样品进行了AAS法对比测定，回收率在91％－104％之间，结果令人满意。该方法快速、简便、可靠，适用于出口松香的日常检验。