KR20100127387A - Measurement method of foul smell by detector tube - Google Patents

Abstract

PURPOSE: A detector tube and a measurement method of bad odor using the detector tube are provided to rapidly measure bad odor by chromogenic reaction. CONSTITUTION: A measurement method of bad odor uses the detector tube(110). The bad odor detector tube includes a detector tube in which a reagent is discolored according to the concentration of bad odor by chemically reacting with the bad odor; and a gas sampling unit which maintains the flow of the air passing through the bad odor detector tube.

Description

Measurement method of odor using a detector tube {MEASUREMENT METHOD OF FOUL SMELL BY DETECTOR TUBE}

The present invention relates to a gas detector tube and a measuring method capable of measuring malodorous substances in the atmosphere, and more particularly, by discoloration in accordance with the inflow of air including malodors by a substance causing a malodor and a chemical color reaction mechanism. In the method for measuring the degree of odor such as ammonia or hydrogen sulfide in the air using the odor detection tube indicating the degree of odor such as ammonia or hydrogen sulfide according to the length of the detection reagent discolored, and the above odor detection tube It is about.

The present invention relates to a method for measuring malodor, and more specifically, a color change caused by passing air containing malodor through a transparent tube filled with a detection reagent that forms a malodor and a color reaction in order to measure the malodor contained in the atmosphere. The present invention relates to a odor detector tube and a method for measuring the degree of odor using a length, which requires simpler operation than a conventional odor measuring method.

As is well known, the main causes of odor are ammonia and hydrogen sulfide. Ammonia is a toxic gaseous substance with a bad smell emitted from industrial facilities, living facilities, and livestock facilities. In particular, the ammonia emitted from the livestock plant has a high specific gravity to account for 60% of the total ammonia gas emitted. Ammonia in the air generates a serious odor despite a small amount of emissions and causes severe discomfort in the surrounding environment, hydrogen sulfide is commonly found in petroleum refining and chemical manufacturing processes, and turns into a weak acid in the human mucosa, causing severe irritation. Inhalation of high concentrations is not only a toxic gaseous substance that can cause lung damage, but also generates a bad odor in small amounts, causing unpleasant feelings. In the odor process test method proposed with the implementation, air dilution sensory and instrumental analysis were proposed to measure the concentration of odorous substances. However, in order to measure odor in the above manner, a highly trained expert or expensive analytical equipment was necessary. For example, in the case of measuring hydrogen sulfide concentration in the air using a hydrogen sulfide sensor, the hydrogen sulfide gas sensor needs to calibrate and calibrate the performance of the sensor using a standard gas at regular intervals to obtain accurate measurement results. Since air containing hydrogen sulfide is collected in a collection bag by using a sampling device, an instrument analysis must be performed in an instrument analysis room, so accurate analysis of hydrogen sulfide is possible, but it is difficult to measure hydrogen sulfide immediately at a pollutant site because it takes a long time to analyze. The air dilution sensory method, which is classified as a substance and is presented in the odor process test method, is a method of evaluating odor intensity only by the smell of a highly trained evaluator for air containing hydrogen sulfide. Experts were required.

In the prior art, the odor measurement method proposed in the odor process test method is used to analyze the components of the sampled air by using an analyzer to determine the concentration of the odor contained therein, and to smell the odor by air dilution. A method of evaluating was used to measure odors in the atmosphere. Such a method requires the operation of highly trained professionals, requires periodic calibration, and takes a long time to measure and analyze.

Therefore, the present invention can be measured quickly compared to the conventional odor measurement method, easy operation of non-professional, and can measure the concentration of odor by a simple operation, odor detection tube by the chemical color reaction and its measuring method To provide.

According to one aspect, the present invention provides a detection tube for measuring the odor contained in the atmosphere by a chemical method and a method for measuring the odor in a pre-treated filter layer and odor that reacts with the odor inside a transparent tube to induce a rapid color reaction. When a detection reagent that causes discoloration is filled, and air containing malodor is introduced, discoloration occurs according to the concentration of the malodor, thereby providing a chemical mechanism and a malodor detecting tube capable of measuring the degree of malodor in the atmosphere.

The present invention relates to a method for measuring the odor in the atmosphere using the odor detector tube according to one aspect, in order to allow the air containing the odor to flow into the interior of the detector tube Sampling means is connected to the suction is connected to the outside air is introduced into the detection tube, passing through the pre-treatment filter and the detection reagent of the odor inside the detection tube provides a sampling means that the color change according to the concentration of the odor occurs.

The present invention can measure the concentration of ammonia or hydrogen sulfide according to the degree of discoloration of the detection reagent according to the concentration of the odor contained by introducing the outside air into the odor detection tube, it is simple compared to the conventional odor measurement method Through the operation, it is possible to quickly measure the concentration of odor such as ammonia or hydrogen sulfide.

The gist of the present invention, by using a gas sensor, using a separate sampling device to collect air to perform an instrument analysis using an analyzer, unlike conventional methods such as air dilution, chemical reaction with odor It includes a odor detection tube according to the detection reagent discolored according to the concentration of odor contained in the air and its measuring method. In addition, it includes a sampling device connected to one side of the odor detector tube to inhale a certain amount of external air to flow into the odor detector tube, it is possible to measure the concentration of odor quickly in a simple operation in the field. .

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram showing a odor according to the present invention and a method of measuring the odor using the same. As shown, the odor detector tube and the measuring method using the odor detector tube 110 capable of measuring the concentration of the odor according to the color change of the detection reagent due to the chemical color reaction by the air containing the odor is introduced and And a sampling means 112 for allowing outside air to pass through the odor gas detection tube and a connector means 114 for connecting the sampling means and the detection tube.

The odor detection tube 110 and the gas sampling means 112 are connected using the connector means 114 attached to the gas sampling means 112. When the gas sampling means is operated, external air is sucked in through the detection tube. The inhaled air reacts with the detection reagent of the detection tube to determine the discoloration length of the detection reagent according to the concentration of the malodor.

The odor detector tube includes a detector tube for the measurement of individual substances such as ammonia or hydrogen sulfide gas, which are main components of the odor.

As shown in FIG. 2, the ammonia gas detecting tube is filled with a detection reagent 210 that reacts with ammonia gas to discolor in a transparent tube, and air is provided on both sides of the detection reagent to fix the detection reagent. It is composed of fixing members 212 and 214 having a porous structure that can be permeable to provide a structure in which the atmosphere is easy to permeate the transparent tube 216.

The ammonia gas detection tube is used to seal both ends by filling the fixing member and the detection reagent inside the transparent tube, and then open both ends to use so that air can pass smoothly. In this case, a rubber cap may be used to seal both ends of the ammonia gas detecting tube, a glass tube may be bonded to the airtight seal, or a sealing member may be joined to a stopper using an adhesive member.

The ammonia gas detector was configured with a color reagent using an acid-base indicator that discolors as the acid-base reaction increases as the pH of the contact surface increases due to contact with ammonia gas. As a support for the above, an inorganic ion compound or a biochemical substance which is stable in the acid-base reaction can be used as a support agent. For example, glucose, which has excellent hygroscopicity and which is not physically and chemically reactive with ammonia, can be used as a support, and is an indicator for developing a color reaction by an acid-base reaction. Acid-bases such as Bromocresol Green, Congo Red, and Phenol Blue Indicators can be used.

The hydrogen sulfide gas detector tube reacts with the pretreatment filter unit 310 composed of mercuric dichloride and hydrogen sulfide gas to maximize the color reaction with the hydrogen sulfide gas as shown in FIG. 3 to cause a color reaction and the concentration of hydrogen sulfide through the discoloration length. The detection reagent portion 312 capable of measuring the space and the fixed partition means 314 separating the space between the pretreatment filter portion and the detection reagent portion, and the transparent tube 316 constituting the body of the detection tube filled with the pretreatment filter and the detection reagent. And fixing means (314a) positioned at both ends of the pretreatment filter part and the detection reagent to fix the inside of the transparent tube to prevent the outflow of the packing material according to the flow of air, and a sealing means for sealing the hydrogen sulfide detection tube. At this time, the pretreatment filter 310 chemically reacts with hydrogen sulfide to produce an acid or a base. , It may be a material such as lead acetate, copper sulfate, or iodine. Hydrogen sulfide gas detection reagent 312 is a color change of the detection reagent as the compound reacted with an acid or a basic material by the pretreatment filter changes the pH of the detection reagent, the detection reagent is changed to Bromocresol in order to cause the color change by the acid or base Acid-base indicators such as Green, Bromophenol Blue, Congo Red, Phenolphthalein, Tymol Blue, Methyl Red, Phenol Red are used, with Bromophenol Blue indicators being most preferred. As a support of the indicator, it is composed of a material such as silica gel and activated carbon which is stable to acid or base and has porosity. Fixed partition means 314a for separating the space between the pretreatment filter part and the detection reagent, and the fixing means 314a for preventing the outflow or departure of the internal filling according to the flow of air are installed at both ends of the detection reagent and the pretreatment filter. The fixing means in the form of a disc is a fixing means having pores for securing the flow of air is composed of a polymer material. The transparent tube 316 of the hydrogen sulfide gas detection tube is filled with a pretreatment filter unit and a detection reagent to check the discoloration length when detecting the hydrogen sulfide gas. , Both ends of the detection tube is composed of a sealing means 318 for sealing with the outside to provide a configuration that is opened and used when using the detection tube.

As shown in FIG. 4, the gas sampling means may introduce external air by holding the handle 410 at the upper end and performing up, down, left and right reciprocating motions. Therefore, when connecting the connector 412 of the front end and the ammonia or hydrogen sulfide detection tube and pulling the handle 410 of the gas sampling device, the odor contained in the outside air passes through the inside of the odor detection tube reacts with the detection reagent. By the color change and the residual air is discharged to the outside, the body of the gas sampling means is characterized in that it is composed of a columnar tube and a piston.

In the above description has been described by presenting a preferred embodiment of the present invention, but the present invention is not necessarily limited to this, and those skilled in the art to which the present invention pertains within a range without departing from the technical spirit of the present invention It will be readily appreciated that branch substitutions, modifications and variations are possible.

1 is a block diagram of the odor detector tube and the measuring method using the same

2 is a block diagram of an ammonia gas detection tube

3 is a configuration diagram of a hydrogen sulfide gas detection tube

4 is a perspective view of a gas sampling device for sucking outside air when measuring the concentration of hydrogen sulfide using a hydrogen sulfide gas detection tube.

<Description of the symbols for the main parts of the drawings>

110: odor detector

112: odor sampling means body

114: detector tube connection connector

210: color development reagent

212, 214: fixing means for coloring reagents

216: transparent tube

310: pretreatment filter unit

312 Color Development Reagent

314a: coloring reagent fixing means

316: transparent tube

318: detection tube sealing means

410: sampling means knob

412: detector tube connector

Claims (10)

Odor detection tube and odor measurement method using the same, Odor odor including a odor detection tube that chemically reacts with the odor and changes the reagent according to the concentration of the odor, and a gas sampling means which sucks external air containing the odor to maintain the flow of air through the odor detection tube. Detection tube and measuring method using the same The method of claim 1, The detection reagent of the odor detection tube is a odor detection tube and measuring method using the same, characterized in that the color reaction occurs as the pH changes by reacting with ammonia or hydrogen sulfide gas among the substances causing the odor 3. The method of claim 2, Ammonia gas detector is used for acid-base indicators of Bromocresol Green, Bromophenol Blue, Congo Red, Phenolphthalein, Tymol Blue, Methyl Red, and Phenol Red for color development, and most preferably, Bromocresol Odor detector and measuring method using the green indicator 3. The method of claim 2, Hydrogen sulfide gas detector uses acid-base indicators of Bromocresol Green, Bromophenol Blue, Congo Red, Phenolphthalein, Tymol Blue, Methyl Red and Phenol Red for color development, and most preferably, Bromophenol Odor detector and measuring method using the blue indicator The method of claim 4, wherein The hydrogen sulfide gas detection tube includes a pretreatment filter unit which reacts with hydrogen sulfide to generate an acid or a base substance, and most preferably, a odor detection tube and a measuring method using the same The method according to claim 3 to 4, According to the discoloration range of the indicator, a basic aqueous solution is added as a means for adjusting the pH of the coloring reagent, and most preferably, a 0.01M KOH aqueous solution is used as a pH adjusting means, odor detection tube and measuring method using the same The method of claim 1, Fixing means installed at both ends of the detecting reagent of the malodor detecting tube to prevent leakage of the filled contents has a size of 1 to several mm, and the malodor detecting tube, characterized in that it comprises a fixing means having one or more holes; Measurement method using this The method of claim 1, The transparent tube constituting the body of the odor detector tube uses a transparent glass or polymer material for easy observation inside the detector tube, and the cap of the tube to preserve the reagent inside the detector tube without inflow of external air until the detector tube is used. , Odor detection tube and measuring method using the same, characterized in that it comprises a joint of the tube, sealing means using an adhesive The method of claim 1, Odor detection tube and measuring method using the same, characterized in that the internal volume has a volume of several tens to hundreds of ml, and most preferably comprises a gas sampling device capable of inhaling 300 ml of external air The method of claim 9, A rubber or polymer connector means is installed at the front end of the gas sampling device, and the connector means can be attached and detached in case of contamination due to inflow of foreign substances. Way

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