1)potassium dichromate method重铬酸钾法
1.The comparison of monitoring COD in water with rapid monitoring method and potassium dichromate method is finished.比较了快速测定法与国家标准方法重铬酸钾法(GB11914-89)测定化学需氧量。
2.Based on the operation and management experience of on-line COD_(Cr) analyzer,several suggestions are put forward,including replacing ferrous ammonium sulfate by potassium hydrogen phthalate as range-measured solution,replacing zero offset by beginning offset,and inspecting the compatibility of analyzer to water quality when the potassium dichromate method is not used.根据水质CODCr在线分析仪运行管理工作的经验,提出以邻苯二甲酸氢钾代替硫酸亚铁铵作为量程测定液,以始点漂移代替零点漂移,以及对于非重铬酸钾法测定CODCr仪器检验,要考察其对水质的适应性的几点建议。
3.the improved method had advantages of fewer quantity of acid,less heating time and low cost over the potassium dichromate method of national standard.废水中化学耗氧量的测定 ,国标用重铬酸钾法 ,该方法不仅酸介质用量大 ,而且需 2h加热。
英文短句/例句
1.Indirectly Determination of Hydrogen Peroxide Content by Using Potassium Dichromate;间接重铬酸钾法测定过氧化氢的含量
2.Elimination of Interference on COD Measurement by K_2Cr_2O_7 Method重铬酸钾法测定COD中的干扰及消除
3.Improvement in the Method of Determination of Iron in Ironstone by Potassium Dichromate;“重铬酸钾法测定铁矿石中铁的含量”实验的改进
4.The Uncertainty Analyze of Determination of the Chemical Oxygen Demand in Water by Potassium Dichromate Method重铬酸钾法测定水中COD的不确定度分析
5.Potassium dichromate titration method was used for determining sodium lactate in compound sodium lactate injection.用重铬酸钾法测定复方乳酸钠注射液中的乳酸钠，方法简便、速，准确。
6.Determination of Phosphite Content in Zinc Phosphite by Potassium Bichromate Method重铬酸钾法测定防锈颜料亚磷酸锌中的亚磷酸根
7.Compare of Potassium Dichromate Method and Rapid Determination Method in COD Determining重铬酸钾法与快速测定法测定化学需氧量的比较
8.Direct Determination of COD_(Cr) by K_2Cr_2O_7 Depigmentation and Cr_2(SO_4)_3 Spectrophotomety重铬酸钾褪色法和硫酸铬显色法直接测定COD_(Cr)
9.Determination of COD in Wastewater by Potassium Dichromate Colorimetric Method重铬酸钾比色法测定水中化学需氧量
10.The Microscale Experiment of the Preparation of Potassium Dichromate by the Oxidant Method of Alkali Fusion;固体碱熔氧化法制备重铬酸钾的微型实验
11.Determination of Iron Content in Dy-Fe Alloy with the Potassium Dichromate Volumetric Method重铬酸钾容量法测定镝铁合金中的铁量
12.Determination of BaCo3 in cathode carbonate by dichromate iodimetryGB/T10304.2-1988阴极碳酸盐中碳酸钡含量的测定重铬酸钾碘量滴定法
13.Silicate rocks--Determination of ferrous oxide content--Potassium dichromate volumetric methodGB/T14506.14-1993硅酸盐岩石化学分析方法重铬酸钾容量法测定氧化亚铁量
14.cotton lead chromate棉铬酸铅处理（先用醋酸铅再用重铬钠或钾处理）
15.Golgi's osmiobichromate solution高尔基氏锇酸重铬酸钾溶液
16.Determination of uranium in uranium ore concentrate by ferrous sulfate reduction--Potassium dichromate titrimatricGB/T11848.1-1989铀矿石浓缩物中铀的测定硫酸亚铁还原--重铬酸钾滴定法
17.Methods for chemical analysis of manganese metal--The titanium trichloride-potassium dichromate volumetric method for the determination of iron contentGB/T8654.2-1988金属锰化学分析方法三氯化钛-重铬酸钾容量法测定铁量
18.Methods for chemical analysis of high-titanium slag and rutile--The potassium dichromate volumetric method for the determination of total iron contentGB/T4102.2-1983高钛渣、金红石化学分析方法重铬酸钾容量法测定全铁量
相关短句/例句
potassium dichromate重铬酸钾法
1.Discussion of influencing factors on COD_(Cr) determination in industrial waste drainage by potassium dichromate;用重铬酸钾法测定工业废水中COD_(Cr)影响因素的探讨
2.Rapid determination of COD in water sample by using potassium dichromate;改进重铬酸钾法快速测定水样CODcr
3)dichromate method重铬酸钾法
1.The common methods to measure include dichromate method which is used to determinate the more serious pollution of industrial waste water; and permanganate method which is applicable to the determination of surface water pollution and sewage.常用的测定方法有重铬酸钾法和高锰酸钾法,前者适用于测定污染较为严重的工业废水,后者适用于测定污染较轻的地表水和生活污水。
4)potassium dichromate standard method重铬酸钾标准法
5)potassium dichromate method passivation重铬酸钾法钝化
6)potassium dichromate feedback method重铬酸钾回流法
延伸阅读
钾-氩法钾-氩法potassium-argonmethod根据40K经K层电子捕获形成稳定同位素40Ar的衰变规律建立的地质计时方法，K具分支衰变，其总量的89.33％为β衰变形成稳定的40Ca，而10.67％以电子俘获并放出γ光子而形成稳定同位素40Ar。根据放射性衰变定律，得出钾-氩法年龄计算公式：其中，λ是40K的总衰变常数，λ＝λe＋λβ，λe和λβ分别是40K衰变成40Ar和40Ca的衰变常数。按该公式计算年龄时，需满足下列条件：①岩石或矿物形成后保持封闭体系，既没有钾的交换，也无40Ar的得失。②样品中不存在过剩氩，外来氩全部作为大气氩扣除。③能精确测定40K的衰变常数和样品中的微量氩。由于40K仅占总钾量的万分之一左右，加之，只约10％的40K衰变成40Ar，所以自然样品中由40K衰变形成的40Ar量极少，年轻样品中的40Ar就更少了。故如何准确测定微量氩，是该法实验技术的关键。钾-氩法中还包括40Ar／39Ar计时法。该计时法是把样品放入核反应堆中经中子照射后，测定它们的40Ar／39Ar比值，以计算样品的地质年龄。适用于钾氩法测定的样品：矿物有云母、钾长石、角闪石、海绿石和伊利石等；岩石主要有玄武岩、细粒中基性岩和板岩等。
