TWI649561B - Detection method - Google Patents
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- TWI649561B TWI649561B TW106100405A TW106100405A TWI649561B TW I649561 B TWI649561 B TW I649561B TW 106100405 A TW106100405 A TW 106100405A TW 106100405 A TW106100405 A TW 106100405A TW I649561 B TWI649561 B TW I649561B
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Abstract
一種檢測方法，係先備具對照溶液，該對照溶液之鹼度值為已知，並將對照溶液以及待測溶液分別裝入容器內；再將空氣分別持續打入對照溶液以及待測溶液內，至對照溶液以及待測溶液之酸鹼值(PH)不再產生變化；續以對照溶液與待測溶液之酸鹼值差值，推算出待測溶液之鹼度值，且對照溶液以及待測溶液皆可倒入缸中使用。A detection method is prepared by preparing a control solution, wherein the alkalinity value of the control solution is known, and the control solution and the solution to be tested are separately loaded into the container; and then the air is continuously driven into the control solution and the solution to be tested. , the pH value of the control solution and the solution to be tested no longer change; continue to calculate the alkalinity value of the solution to be tested by the difference between the pH value of the control solution and the solution to be tested, and the control solution and the solution The test solution can be poured into the cylinder for use.
Description
一種檢測方法，尤指利用對照溶液與待測溶液水中二氧化碳(CO2)達到穩定時，以對照溶液與待測溶液之酸鹼值差值推算出待測溶液鹼度值(Alkalinity)之檢測方法。 A detection method, in particular, when the control solution and the carbon dioxide (CO2) in the solution to be tested are stabilized, the detection method of the alkalinity value (Alkalinity) of the solution to be tested is derived by using the difference between the pH value of the control solution and the solution to be tested.
按，在飼養珊瑚及海水魚的過程中，鹼度值(Alkalinity)是非常重要的，飼養者必須定期檢測水中鹼度值，依據鹼度值進行適度的提升。目前對於鹼度值之測試方法是用「滴定法」，「滴定法」主要的測試方法有「電位滴定法」以及「酸鹼指示劑滴定法」兩種常見的方式；「電位滴定法」是根據滴入酸液時，電位滴定曲線在終點時的突躍，確定特定酸鹼值下的鹼度，此種作法需要較為精密的儀器進行，對於飼養者來說，成本相當的高，而「酸鹼指示劑滴定法」則是利用滴入定量的酸液，以酸鹼值的變化推算出溶液鹼度值。 According to the method, in the process of raising corals and marine fish, the alkalinity value (Alkalinity) is very important. The breeder must regularly check the alkalinity value in the water and carry out a moderate increase according to the alkalinity value. At present, the test method for the alkalinity value is "titration method". The main test methods for "titration method" are "potentiometric titration" and "acid-base indicator titration". The "potentiometric titration method" is According to the sudden drop of the potentiometric titration curve at the end point when dropping the acid solution, the alkalinity at a specific pH value is determined. This method requires a relatively sophisticated instrument, and the cost is quite high for the breeder, and In the acid-base indicator titration method, the acidity of the solution is determined by the amount of acidity and alkalinity.
然而，不論是「電位滴定法」或「酸鹼指示劑滴定法」，皆利用酸液加入待測鹼度值之溶液中，酸液會使溶液中的元素產生化學變化，無法自行還原，因此測試完的溶液即無法再倒回飼養缸中使用，而飼養缸中的水，是經過相當複雜的「養水」過程培養出來，長時間的消耗飼養缸中的水，飼養者必須經常性地進行「養水」過程，來補充飼養缸中的水。 However, whether it is "potentiometric titration" or "acid-base indicator titration", the acid solution is added to the solution of the alkalinity value to be measured. The acid solution causes chemical changes in the elements in the solution, and cannot be self-reduced. The tested solution can no longer be returned to the feeding tank, and the water in the feeding tank is cultivated through a fairly complicated "watering" process. The water in the feeding tank is consumed for a long time, and the breeder must regularly Carry out the "water maintenance" process to supplement the water in the tank.
是以，要如何解決上述習知鹼度值檢測方法所造成的問題與缺失，即為相關業者所亟欲研發之課題。 Therefore, how to solve the problems and lacks caused by the above-mentioned conventional alkalinity value detection method is a problem that the relevant industry is eager to develop.
本發明之主要目的乃在於，利用空氣打入已知鹼度值之對照溶液與待測溶液中，讓對照溶液與待測溶液中的二氧化碳(CO2)濃度達到穩定後，再量測對照溶液與待測溶液之酸鹼值，並以對照溶液與待測溶液之酸鹼值差值推算出待測溶液鹼度值(Alkalinity)，且對照溶液以及待測溶液皆可倒入缸中使用。 The main purpose of the present invention is to use air to drive a control solution with a known alkalinity value and a solution to be tested, and to stabilize the concentration of carbon dioxide (CO2) in the control solution and the solution to be tested, and then measure the control solution and The pH value of the solution to be tested, and the alkalinity value (Alkalinity) of the solution to be tested is derived by the difference between the pH value of the control solution and the solution to be tested, and the control solution and the solution to be tested can be poured into the cylinder for use.
為達上述目的，本發明之檢測方法係先備具對照溶液，該對照溶液之鹼度值為已知，並將對照溶液以及待測溶液分別裝入容器內；再將空氣分別持續打入對照溶液以及待測溶液內，至對照溶液以及待測溶液之酸鹼值(PH)不再產生變化；續以對照溶液與待測溶液之酸鹼值差值，推算出待測溶液之鹼度值。 In order to achieve the above object, the detection method of the present invention is prepared with a control solution, the alkalinity value of the control solution is known, and the control solution and the solution to be tested are separately loaded into the container; and the air is continuously driven into the control. In the solution and the solution to be tested, the pH value of the control solution and the solution to be tested no longer changes; the difference between the pH value of the control solution and the solution to be tested is calculated, and the alkalinity value of the solution to be tested is derived. .
前述之檢測方法，在推算出待測溶液之鹼度值，係依照以下公式計算： In the foregoing detection method, the alkalinity value of the solution to be tested is calculated, and is calculated according to the following formula:
待測溶液之鹼度值=M X(待測溶液酸鹼值減去對照溶液酸鹼值)+對照溶液之鹼度值；M為酸鹼值換算鹼度值之係數。 The alkalinity value of the solution to be tested = M X (the pH value of the solution to be tested minus the pH value of the control solution) + the alkalinity value of the control solution; M is the coefficient of the alkalinity value of the pH value.
本發明之檢測方法係依照下列步驟進行： The detection method of the present invention is carried out according to the following steps:
(100)備妥待測溶液與對照溶液： (100) Prepare the solution to be tested and the control solution:
待測溶液為飼養珊瑚或海水魚缸中的水，對照溶液為可為市售或 自行調配的鹼度提升劑、海水，且對照溶液之鹼度值(Alkalinity)為已知，並將待測溶液與對照溶液分別裝入容器內。 The solution to be tested is water in a coral or seawater aquarium, and the control solution may be commercially available or The self-adapted alkalinity enhancer, seawater, and the alkalinity value of the control solution are known, and the solution to be tested and the control solution are separately charged into the container.
(110)將空氣打入待測溶液與對照溶液中，至待測溶液與對照溶液之酸鹼值(PH)不再產生變化： (110) The air is driven into the solution to be tested and the control solution until the pH value of the solution to be tested and the control solution no longer changes:
利用空氣泵連接空氣導管，並將空氣導管分別插入待測溶液與對照溶液中，持續的將空氣打入待測溶液與對照溶液中，並量測待測溶液與對照溶液的酸鹼值(PH)，直到待測溶液與對照溶液的酸鹼值不再產生變化，即待測溶液與對照溶液中的二氧化碳(CO2)分別達到穩定狀態；在此步驟中可以酸鹼值測定器分別插入待測溶液與對照溶液中，待酸鹼值測定器所檢測之數值不再產生變化，即可判定待測溶液與對照溶液中的二氧化碳達到穩定狀態，也可依照待測溶液與對照溶液的溶液體積設定空氣泵之運作時間，以定時方式打入空氣，讓待測溶液與對照溶液中的二氧化碳達到穩定狀態。 The air duct is connected by an air pump, and the air duct is separately inserted into the solution to be tested and the control solution, and the air is continuously driven into the solution to be tested and the control solution, and the pH value of the solution to be tested and the control solution are measured (PH) ), until the pH value of the solution to be tested and the control solution no longer change, that is, the carbon dioxide (CO2) in the solution to be tested and the control solution respectively reach a steady state; in this step, the pH value detector can be separately inserted into the test In the solution and the control solution, the value detected by the pH detector is no longer changed, and the carbon dioxide in the solution to be tested and the control solution can be determined to be stable, or can be set according to the solution volume of the solution to be tested and the control solution. When the air pump is operated, air is injected in a timed manner to stabilize the carbon dioxide in the solution to be tested and the control solution.
(120)量測待測溶液與對照溶液之酸鹼值： (120) measuring the pH value of the solution to be tested and the control solution:
以酸鹼值測定器分別量測待測溶液與對照溶液之酸鹼值，在此步驟中，最好以單一酸鹼值測定器分別對待測溶液與對照溶液進行量測，以確保不會因酸鹼值測定器的不同，產生不同的誤差值，若以單一酸鹼值測定器進行量測，其誤差值也必定相同。 The pH value of the solution to be tested and the control solution are respectively measured by a pH detector. In this step, the solution to be tested and the control solution are preferably measured by a single pH detector to ensure no cause. The difference between the pH detectors produces different error values. If measured by a single pH detector, the error values must be the same.
(130)推算待測溶液之鹼度值： (130) Calculate the alkalinity value of the solution to be tested:
依照以下公式計算出待測溶液之鹼度值： Calculate the alkalinity value of the solution to be tested according to the following formula:
待測溶液之鹼度值=M X(待測溶液酸鹼值減去對照溶液酸鹼值)+對照溶液之鹼度值；M為酸鹼值換算鹼度值之係數。前述之M係數，可由實驗及理論推得，由於鹼度值代表溶液中和酸的能力，因此在一定的大氣壓力、溫度與空氣中二氧化碳的濃度下，相同鹼度值所能中和酸的能力必定會相同，鹼度較高的溶液能中和酸的能力較高。 The alkalinity value of the solution to be tested = M X (the pH value of the solution to be tested minus the pH value of the control solution) + the alkalinity value of the control solution; M is the coefficient of the alkalinity value of the pH value. The aforementioned M coefficient can be derived experimentally and theoretically. Since the alkalinity value represents the ability of the solution to neutralize the acid, the same alkalinity value can neutralize the acid at a certain atmospheric pressure, temperature and concentration of carbon dioxide in the air. The ability must be the same, and the higher alkalinity solution has a higher ability to neutralize the acid.
前述之待測溶液與對照溶液係相同為海水，而本發明之檢測方法，亦可使用於待測待測溶液與對照溶液皆為淡水時。 The test solution of the present invention is the same as the control solution, and the detection method of the present invention can also be used when the test solution to be tested and the control solution are both fresh water.
是以，本發明為可解決習知技術之不足與缺失，並可增進功效，其關鍵技術在於： Therefore, the present invention can solve the deficiencies and shortcomings of the prior art, and can improve the efficiency. The key technologies are:
1、本發明為利用空氣中所含有的二氧化碳做為測試溶液中和酸的能力，相較於習知技術，本發明並無消耗性材料的成本，因此可節省使用者之使用成本。 1. The present invention utilizes the carbon dioxide contained in the air as the ability to neutralize the acid in the test solution. Compared with the prior art, the present invention has no cost of consumable materials, thereby saving the user's use cost.
2、本發明將二氧化碳打入溶液中，為一種物理變化，不會使溶液中的元素產生不可逆的化學變化，因此不論是對照溶液或待測溶液，皆可倒回缸中使用。 2. The present invention converts carbon dioxide into a solution, which is a physical change that does not cause irreversible chemical changes in the elements in the solution, so whether it is a control solution or a solution to be tested, it can be used back into the cylinder.
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| CN1888895A (en) * | 2005-06-27 | 2007-01-03 | 天津师范大学 | Method and instrument for determining PH value and inorganic carbon form through measuring density of CO2 |
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