电导率法TOC分析仪 使用与操作方法
开始检测并计入检测次数，检测完毕后显示最后一次检测结果，其中几次检测的结果均自动保存在查询记录当中。检测次数的设置方式为：用“选择”键移动光标，用“设置”键修改数字，按“确定”键进行确认，进入分析界面。先进行四次冲洗过程
电导率法TOC分析仪 水中TOC的监测
我们的生活离不开水，若相当多的有机污染物存在于水中，将直接影响水体的质量，对我们的生活和生产造成危害，因此水和废水的监测，越来越引起人们的重视。其中水体中总有机碳(TOC)含量的检测，日益引起关注。它是以碳含量表示水体中有机物质总量的综合指标。TOC的测定一般采用燃烧法，此法能将水样中有机物全部氧化，可以很直接地用来表示有机物的总量。因而它被作为评价水体中有机物污染程度的一项重要参考指标。
设备标准配置
试验主机一台
采集管两条
电源线一条
控制系统一套
数据采集系统一套
产品使用说明书一份
产品合格证一份
性能规格:
测量范围：0.01mg/L～1.000 mg/L（此处可调）
精度：?4%测试范围
分辨率：0.001mg /L
分析时间：连续分析
响应时间：6分钟之内
检测极限：0.001mg /L
样品温度：1- 95℃
重复性误差：≤3%
电源要求/功能：220V
显示屏：彩色触摸屏
操作控制：无线蓝牙技术
使用与操作方法
开始检测并计入检测次数，检测完毕后显示最后一次检测结果，其中几次检测的结果均自动保存在查询记录当中。检测次数的设置方式为：用“选择”键移动光标，用“设置”键修改数字，按“确定”键进行确认，进入分析界面。先进行四次冲洗过程
直接法测定TOC值的方法原理
将水样酸化后曝气，使各种碳酸盐分解生成二氧化碳而驱除后，再注入高温燃烧管中，可直接测定总有机碳。但由于在曝气过程中会造成水样中挥发性有机物的损失而产生测定误差，因此其测定结果只是不可吹出的有机碳值。
电导率法
使用紫外灯将水中有机物转化为二氧化碳，二氧化碳溶解在水中形成碳酸根离子.有机物转化前后都测量电导率，通过电导率的差值可算出增加的碳酸根含量，就可以算出水中的TOC了。
标准贮备液的制备
(1)有机碳标准贮备液：称取干燥后的适量KHC8H4O4，用水稀释，一般贮备液的浓度为400mg/L碳。
(2)无机碳标准贮备液：称取干燥后适量比例的碳酸钠和碳酸氢钠，用水稀释，一般贮备液的浓度为400mg/L无机碳。
差减法测定TOC值的方法原理
水样分别被注入高温燃烧管(900℃)和低温反应管(150℃)中。经高温燃烧管的水样受高温催化氧化，使有机化合物和无机碳酸盐均转化成为二氧化碳。经反应管的水样受酸化而使无机碳酸盐分解成为二氧化碳，其所生成的二氧化碳依次导入非分散红外检测器，从而分别测得水中的总碳(TC)和无机碳(IC)。总碳与无机碳之差值，即为总有机碳(TOC)。
应用范围
该仪器可用于检测制药工业中纯化水、注射用水和去离子水中有机碳的浓度；也可用于半导体行业中超纯水TOC的检测。
在制药领域和生物化学领域清洁验证过程中，可用于验证清洁效果。
该仪器具有在线检测功能，可以在线监测制药工业的制水系统、半导体工业的超纯水制备系统和晶片工艺过程、电厂去离子水制备过程等。
TOC分析仪的水样中TOC的分析步骤
水中的有机物质的含量，以有机物中的主要元素一碳的量来表示，称为总有机碳。TOC的测定类似于TOD的测定。在950℃的高温下，使水样中的有机物气化燃烧，生成CO2，通过红外线分析仪，测定其生成的CO2之量，即可知总有机碳量。
计算
差减法：总有机碳(mg/L)=总碳-无机碳
直接法：总有机碳(mg/L)=总碳
工作原理
本仪器采用紫外氧化的原理，将样品中的有机物氧化为二氧化碳，二氧化碳的测试采用的是直接电导率法，通过测试经过氧化反应的样品的总碳含量和未经过氧化反应的样品总无机碳的含量差值来测定总有机碳含量，即：总有机碳（TOC）=总碳（TC）-总无机碳（TIC）。
工作原理
本仪器采用紫外氧化的原理，将样品中的有机物氧化为二氧化碳，二氧化碳的测试采用的是直接电导率法，通过测试经过氧化反应的样品的总碳含量和未经过氧化反应的样品总无机碳的含量差值来测定总有机碳含量，即：总有机碳（TOC）=总碳（TC）-总无机碳（TIC）。
产品特点：
1.仪器采用便携设计，使用轻便，方便移动至取样点。
2.采用嵌入式系统，触摸屏设计，纯中文操作方便简易。
3.针对制药用水（TOC含量在1000ppb以下）总有机碳含量的检测设计，进行检测。
4.配备大量的储存空间，能够存储大量的测试数据。
5.中文打印，输出测试参数、测试结果。
6.在使用、贮存和更换过程中不需要气体或试剂，无移动部件，减少维修和维护成本。
7.当测试样品浓度超过规定限度，仪器能够自动报警，并输出控制信号。
8.符合国家2010版《中国药典》规定的测试方案，可以提供IQ/OQ/PQ服务。
仪器特点
1. 采用24 位A/D 转换技术和32bin 信号处理技术的应用；
2. 自动检漏控制系统：实时检测气体流量，同时配有报警设置，防止气体泄漏；
3. TIC 反应池加热、制冷、脱水、液位监控4 位一体技术；
4. 自动微量进样，样品进样量可控；
5. 具有在线设定、实时监控、自我检定、流速控制的功能；
6. 实时检测软件：样品曲线在同一坐标下绘制，直观显示重复性；时刻监测仪器运行状态，对比实测参数和设定参数的差异；
7. 先进的微信号处理系统，具有在线设定、实时监控、自我检定、流速控制等几大优势， 保证仪器性能优越，操作安全；
8. 自动检漏控制系统：实时检测气体流量，同时配有报警设置，防止气体泄漏，最大限度保证操作者和仪器的安全；
9. 先进的流速控制信号处理技术的应用，屏蔽流速波动带来的影响，保证读数稳定准确； 10.先进的实时检测软件：样品曲线在同一坐标下绘制，直观显示重复性；时刻监测仪器运行状态，对比实测参数和设定参数的差异；
10. 根据不同样品的不同性质，设定不同的控制温度，以使样品彻底消解，使测量数据更为准确可靠；
11. 仪器内部采用先进的弱电设计方式，操作安全；
注意事项
● 该仪器初始的包装材料需小心保存，安装需由本公司的专业技术人员进行操作。
● 若仪器由于任何原因必须返修，必须将其装入原纸箱中以防运输途中损坏。
Usage and operation methods
Start the detection and count the number of detections. After the detection is completed, the last detection result will be displayed, and the results of several detections will be automatically saved in the query record. The setting method for the detection frequency is: use the "Select" key to move the cursor, use the "Set" key to modify the number, press the "OK" key to confirm, and enter the analysis interface. Perform four flushing processes first
Monitoring of TOC in water
Our lives cannot do without water. If a considerable amount of organic pollutants exist in water, it will directly affect the quality of the water and pose a threat to our lives and production. Therefore, monitoring water and wastewater is increasingly attracting people's attention. The detection of total organic carbon (TOC) content in water bodies is increasingly attracting attention. It is a comprehensive indicator that represents the total amount of organic matter in water bodies based on carbon content. The determination of TOC generally adopts the combustion method, which can completely oxidize the organic matter in the water sample and can be directly used to indicate the total amount of organic matter. Therefore, it is regarded as an important reference indicator for evaluating the degree of organic pollution in water bodies.
Equipment standard configuration
One experimental host
Two collection tubes
One power cord
One set of control system
A set of data collection system
One copy of the product user manual
One copy of product qualification certificate
Performance specifications:
Measurement range: 0.01mg/L to 1.000 mg/L (adjustable here)
Accuracy: ? 4% Test range
Resolution: 0.001mg/L
Analysis time: continuous analysis
Response time: within 6 minutes
Detection limit: 0.001mg/L
Sample temperature: 1-95 ℃
Repetitive error: ≤ 3%
Power requirement/function: 220V
Display screen: Color touch screen
Operation control: Wireless Bluetooth technology
Usage and operation methods
Start the detection and count the number of detections. After the detection is completed, the last detection result will be displayed, and the results of several detections will be automatically saved in the query record. The setting method for the detection frequency is: use the "Select" key to move the cursor, use the "Set" key to modify the number, press the "OK" key to confirm, and enter the analysis interface. Perform four flushing processes first
Principle of direct method for determining TOC value
After acidifying the water sample and aerating it, various carbonates are decomposed to produce carbon dioxide, which is then removed and injected into a high-temperature combustion tube for direct measurement of total organic carbon. However, due to the loss of volatile organic compounds in the water sample during the aeration process, measurement errors may occur, so the measurement result is only the organic carbon value that cannot be blown out.
Conductivity method
Using ultraviolet lamps to convert organic matter in water into carbon dioxide, which dissolves in water to form carbonate ions The conductivity is measured before and after the conversion of organic matter, and the difference in conductivity can be used to calculate the increased carbonate content, which can then be used to calculate the TOC in water.
Preparation of standard storage solution
(1) Organic carbon standard storage solution: Weigh an appropriate amount of dried KHC8H4O4 and dilute it with water. The concentration of the standard storage solution is generally 400mg/L carbon.
(2) Inorganic carbon standard storage solution: Weigh an appropriate proportion of sodium carbonate and sodium bicarbonate after drying, dilute with water, and the general concentration of the storage solution is 400mg/L inorganic carbon.
The principle of the method for determining TOC value by subtraction method
The water samples were injected into high-temperature combustion tubes (900 ℃) and low-temperature reaction tubes (150 ℃) respectively. The water sample passing through the high-temperature combustion tube is subjected to high-temperature catalytic oxidation, converting both organic compounds and inorganic carbonates into carbon dioxide. The water sample passing through the reaction tube is acidified, causing inorganic carbonates to decompose into carbon dioxide. The generated carbon dioxide is then sequentially introduced into a non dispersive infrared detector to measure the total carbon (TC) and inorganic carbon (IC) in the water. The difference between total carbon and inorganic carbon is called total organic carbon (TOC).
Application scope
This instrument can be used to detect the concentration of organic carbon in purified water, injection water, and deionized water in the pharmaceutical industry; It can also be used for the detection of TOC in ultrapure water in the semiconductor industry.
In the pharmaceutical and biochemical fields, it can be used to verify the cleaning effect during the cleaning validation process.
This instrument has online detection function, which can monitor the water production system in the pharmaceutical industry, the ultrapure water preparation system and chip process in the semiconductor industry, and the deionized water preparation process in power plants online.
Analysis steps of TOC in water samples by TOC analyzer
The content of organic matter in water, expressed as the amount of the main element carbon in organic matter, is called total organic carbon. The determination of TOC is similar to the determination of TOD. At a high temperature of 950 ℃, the organic matter in the water sample is gasified and burned to generate CO2. The total organic carbon content can be determined by measuring the amount of CO2 generated using an infrared analyzer.
calculation
Subtraction method: Total organic carbon (mg/L)=Total carbon - Inorganic carbon
Direct method: Total organic carbon (mg/L)=Total carbon
working principle
This instrument adopts the principle of ultraviolet oxidation to oxidize organic matter in the sample into carbon dioxide. The direct conductivity method is used to test the carbon dioxide content. The total organic carbon content is determined by measuring the difference between the total carbon content of the sample that has undergone oxidation reaction and the total inorganic carbon content of the sample that has not undergone oxidation reaction, that is, total organic carbon (TOC)=total carbon (TC) - total inorganic carbon (TIC).
working principle
This instrument adopts the principle of ultraviolet oxidation to oxidize organic matter in the sample into carbon dioxide. The direct conductivity method is used to test the carbon dioxide content. The total organic carbon content is determined by measuring the difference between the total carbon content of the sample that has undergone oxidation reaction and the total inorganic carbon content of the sample that has not undergone oxidation reaction, that is, total organic carbon (TOC)=total carbon (TC) - total inorganic carbon (TIC).
Product features:
1. The instrument adopts a portable design, which is easy to use and convenient to move to the sampling point.
2. Adopting an embedded system and touch screen design, pure Chinese operation is convenient and easy.
3. Design and conduct testing for the total organic carbon content of pharmaceutical water (TOC content below 1000ppb).
4. Equipped with a large amount of storage space, capable of storing a large amount of test data.
5. Print in Chinese and output test parameters and results.
6. No gas or reagents are required during use, storage, and replacement, and there are no moving parts, reducing maintenance and repair costs.
When the concentration of the test sample exceeds the specified limit, the instrument can automatically sound an alarm and output a control signal.
8. According to the testing plan specified in the 2010 edition of the Chinese Pharmacopoeia, IQ/OQ/PQ services can be provided.
Instrument features
1. Application of 24 bit A/D conversion technology and 32bin signal processing technology;
2. Automatic leak detection control system: Real time detection of gas flow rate, equipped with alarm settings to prevent gas leakage;
3. Four in one technology for TIC reaction tank heating, cooling, dehydration, and liquid level monitoring;
4. Automatic micro injection, with controllable sample injection volume;
5. It has the functions of online setting, real-time monitoring, self calibration, and flow rate control;
6. Real time detection software: Sample curves are drawn at the same coordinates, visually displaying repeatability; Monitor the operating status of the instrument at all times, compare the differences between the measured parameters and the set parameters;
7. Advanced micro signal processing system with several advantages such as online setting, real-time monitoring, self calibration, and flow rate control, ensuring superior instrument performance and safe operation;
8. Automatic leak detection control system: Real time detection of gas flow rate, equipped with alarm settings to prevent gas leakage and maximize the safety of operators and instruments;
9. The application of advanced flow rate control signal processing technology to shield the impact of flow rate fluctuations and ensure stable and accurate readings; 10. Advanced real-time detection software: Sample curves are drawn at the same coordinates, visually displaying repeatability; Monitor the operating status of the instrument at all times, compare the differences between the measured parameters and the set parameters;
10. According to the different properties of different samples, set different control temperatures to thoroughly digest the samples and make the measurement data more accurate and reliable;
11. The instrument adopts advanced weak current design internally, ensuring safe operation;
matters needing attention
The initial packaging materials of the instrument need to be carefully stored, and installation must be carried out by our professional technical personnel.
If the instrument needs to be repaired for any reason, it must be packed into the original cardboard box to prevent damage during transportation.
