電導(dǎo)率的測定翻譯-中英對照
1、概述：酸、堿、鹽等電解質(zhì)溶于水中，離解成帶正、負(fù)電荷的離子，溶液具有導(dǎo)電的能力。其導(dǎo)電能力的大小，可用電導(dǎo)率來表示。
電解質(zhì)溶液的電導(dǎo)率，通常是用兩個(gè)金屬片（即電極）插入溶液中測兩極間的電阻率大小來確定，電導(dǎo)率是電阻率的倒數(shù)。根據(jù)歐姆定律，溶液的電導(dǎo)（G）與電極面積（A）成正
比，與極間距離（L）成反比。
即 G=DD 或 DD=G （1）
上式中DD稱為電導(dǎo)率，它是指電極面積1cm2，極間距離1cm時(shí)溶液的電導(dǎo)，其單位為西/厘米，用符號S/cm表示。對同一電極，L/A不變，可用K表示（K稱為電導(dǎo)池常數(shù)），因此被
測溶液的電導(dǎo)率和電導(dǎo)的關(guān)系為：
DD=G•K或G=DD/K （2）
對于同一溶液，用不同電極測出的電導(dǎo)值不同，但電導(dǎo)率是不變的。溶液的電導(dǎo)率和電解質(zhì)的性質(zhì)、濃度及溶液的溫度有關(guān)。在一定條件下，可用電導(dǎo)率來比較水中溶解物質(zhì)的含
量。
三． 微量硅的測定
１． 7230G型分光光度計(jì)（硅表）
1、簡介
（1）調(diào)節(jié)波長旋鈕使波長移到所需之處（815nm）。
（2）四個(gè)比色皿，其中一個(gè)放入?yún)⒈仍嚇樱溆嗳齻�(gè)放入待測試樣，將比色皿放入比色皿架中，夾子夾緊，蓋上池蓋。
（3）參比試樣推入光路，按“MODE”鍵顯示τ(T)狀態(tài)或A狀態(tài)。
（4）“100%τ”鍵顯示“T100.0”或”AE1”。
（5）打開樣品池蓋子，按“0%τ”鍵，主顯示“T0.0”或“AE1”。
（6）蓋上樣品池蓋子，按“100%τ” 鍵，主顯示“T100.0”。
（7）按數(shù)字鍵“x1” “y1” “z1” “d1”,按“100”%即輸入了系數(shù)M，按數(shù)字鍵“x2” “y2” “z2” “d2”， 按“100”%即輸入了系數(shù)N，這就建立了濃度方程。
（8）把拉桿輕輕拉出一格，將待測試樣推入光路，按“MODE”顯示濃度值。
注：測試水樣時(shí)，比色皿外部不能有水跡。
2、7230G型分光光度計(jì)的使用方法(硅分析)
（1）開機(jī)預(yù)熱5分鐘、儀表顯示F7230。
（2）調(diào)節(jié)波長旋鈕使波長移到所需之處（815nm）。
（3）按“CE” 儀表顯示“YEA”。
（4）按“0%” 儀表顯示“00-00”。
（5）按二次“MODE”第一次顯示“T” 第二次顯示“A”。
（6）按“100%” 顯示“A0.000”
（7）打開蓋子,按“0%” 顯示“AET”，蓋上蓋子按“100%” 顯示“A0.000”。
（8）校正：用除鹽水校表、兩個(gè)空白樣誤差 A0.002以內(nèi)。
（9）輸入曲線：按3.092按“100%” 顯示“A0.000”, 按5.639按“100%” 顯示“A0.000”。
（10）按MOOE顯示“CE2”可做水樣分析。
（11）如不顯示 重新校表。
（12）水樣加藥；50ml水樣，加1：1鹽酸1 ml，1min加10%鉬酸銨2ml搖勻置5min，加10%草酸（爐水3ml，其它水樣2ml）搖勻置1min加1-2-4酸2ml，搖勻置8min即可進(jìn)行測定。
注：（1）測試水樣時(shí)，比色皿外部不能有水跡。
（2）比色皿放入比色皿架中時(shí)，夾子夾緊。
（3）比色皿要在光路中
II. System description:
The sea water electrolysis chlorine production system may transfer the 6.3KVAC alternating current to direct current and apply to the anion and anode of sea
water electrolytic tank, which may cause the cell reaction and produce the active available chlorine. This available chlorine shall apply to the direct
current cooling system, sea water pretreatment system and hyperfiltration processing system, so as to solve the problems of sea biology and fungus algae
reproduction adhered to the cooling water pipeline, on the water recovery condenser titanium tube and other sea water hyperfiltration processing system
which may reduce circulation area and influence water distribution capacity, reduce the evaporation efficiency of water recovery condenser, force the unit
to reduce the load to operate and affect normal operations of the other equipments.
III. Working flow:
The working flow of integral unit is to pump the sea water and transmit to the chlorine production chamber through 3 set of seawater corrosion resistant
booster pump (one pump for operation and one for backup in case of failure); the eliminates the solid pollutant with the diameter above the 0.5mm through
auto back washing filters (one pump for operation and one for backup in case of failure), and enters into the electrolytic cell for electrolysis process.
The chlorine unit is composed by two group of 65kg/h electric tank module; each group of electric tanks module has altogether 9 SC400/1 electric cell which
applies series connection of waterway .This electric tank applies latest manufacturing technology of Seven- Trent De Nora Corporation which uses three piece
of SC type sea water electrolysis process. Each group of electric tank is connected through the series connection of conduction bus. Two sets of rectifier
units exchange the 6.3KVAC alternating current into the direct current and supply to corresponding the electric tank group separately, and then electrolysis
the sea water flow of the electric tank; produces sodium hypochlorite solution and by-product hydrogen; enters into the sodium hypochlorite storage tank;
dilution in storing tank of sodium hypochlorite and discharges into the atmosphere. The solution of sodium hypochlorite storage tank shall delivery to each
dosing point through various dosing pumps.
In addition, the system design is arranged with 1 set of acid pickling systems, which shall carry out the regular acid pickling process of the electric
tank.
IV. Chemical Adding Process:
Continuous adding Pump is used to add drugs into the sodium hypochlorite solution successively. When the solution in the sodium hypochlorite storage tank
rises to a certain level, it is available to start up the impacting chemical adding pump, achieving the flow required by impacting chemical adding.
During continuous chemical adding, two units require a totally continuous chemical adding quantity of 58m3/h to maintain the effective chlorine
concentration of 1ppm. The remaining sodium hypochlorous solution will be stored in the tank for impacting chemical adding. When the sodium hypochlorous
solution accumulates to a certain quantity, start up the impacting chemical adding pump, keeping impacting chemical adding for 30 minutes with a flow of
72m3/h in order to obtain an effective chlorine concentration of 3ppm.
Seawater pretreatment chemical adding requires a continuous chemical adding flow of 1m3/h to achieve 2.0 mg/l.
Anti-penetrating chemical adding requires a continuous chemical adding flow of 1m3/h to achieve 2.0 mg/l.
V．Hydrogen Discharging and Sewage Draining:
After being diluted below 1%, the hydrogen air is safely discharged into the atmosphere from the outlet on the top of sodium hypochlorite storage tank.
The calcium and magnesium generated in the electrolytic process precipitate at the bottom of the sodium hypochlorite storage tank, which are discharged
through the blowdown valve regularly.
武漢翻譯公司
2013.7.12