JP4684004B2 - Aldehyde compound detection composition - Google Patents
Aldehyde compound detection composition Download PDFInfo
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- JP4684004B2 JP4684004B2 JP2005147469A JP2005147469A JP4684004B2 JP 4684004 B2 JP4684004 B2 JP 4684004B2 JP 2005147469 A JP2005147469 A JP 2005147469A JP 2005147469 A JP2005147469 A JP 2005147469A JP 4684004 B2 JP4684004 B2 JP 4684004B2
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Description
本発明は、ホルムアルデヒド、アセトアルデヒド、グルタールアルデヒドなどのアルデヒド化合物の検知組成物に関する。更に詳細には、２液型からなり、使用の際に２液を混合することによって、ガス又は水溶液中のアルデヒド化合物を色の変化で検知することができるゲル状のアルデヒド化合物検知組成物に関するものである。 The present invention relates to a detection composition for aldehyde compounds such as formaldehyde, acetaldehyde, and glutaraldehyde. More specifically, the present invention relates to a gel-like aldehyde compound detection composition comprising a two-component type and capable of detecting an aldehyde compound in a gas or an aqueous solution by a color change by mixing the two components during use. It is.
従来、この種の検知組成物として、ゲル状の検知組成物が提供されている（特許文献１）。本発明によれば、パラローズアニリン誘導体と亜硫酸を混合し、この消色状態の混合組成物を、アルデヒド化合物雰囲気下に暴露することにより、HCＨOとSO2 −が反応し、亜硫酸がパラローズアニリン誘導体から分解することにより発色させてアルデヒドを検知するものであった。 Conventionally, a gel-like detection composition is provided as this kind of detection composition (patent document 1). According to the present invention, a pararose aniline derivative and sulfurous acid are mixed, and the decolored mixed composition is exposed to an aldehyde compound atmosphere, whereby HCHO reacts with SO 2 − and sulfurous acid becomes pararose aniline. The aldehyde was detected by developing a color by decomposing from the derivative.
しかしながら、この混合一体組成型のアルデヒド化合物検知組成物の場合、加熱又は長期間保存しておくと亜硫酸が飛散することにより、使用前に発色してしまう問題があった。また、前記混合一体組成型のインキは、冷蔵保存しなければ使用し難い問題がある。 However, in the case of this mixed and integrated composition type aldehyde compound detection composition, there has been a problem that, when heated or stored for a long period of time, the sulfurous acid scatters and develops color before use. Further, the mixed integral composition type ink has a problem that it is difficult to use unless it is refrigerated.
本発明の目的は、加熱又は長期間保存しても亜硫酸の飛散がなく、使用前に発色することがなく、しかも冷蔵保存しなくても使用することが可能なアルデヒド化合物検知組成物を提供するところにある。 An object of the present invention is to provide an aldehyde compound detection composition that does not scatter sulfurous acid even when heated or stored for a long period of time, does not develop color before use, and can be used without refrigerated storage. By the way.
本発明は、パラローズアニリン誘導体、酸性物質及び水を含む呈色成分組成物Ａ液と、
亜硫酸又はその塩及び水を含む脱色成分組成物Ｂ液からなる２液混合型組成物であって、
前記呈色成分組成物Ａ液、前記脱色成分組成物Ｂ液のうち、少なくともいずれかにゲル化剤が含まれているアルデヒド化合物検知組成物(２液混合型のキット組成物)である。
The present invention provides a color component composition A liquid containing a pararose aniline derivative, an acidic substance, and water;
A two-component mixed composition comprising a decolorizing component composition B solution containing sulfurous acid or a salt thereof and water,
It is an aldehyde compound detection composition (a two-component mixed kit composition) in which at least one of the coloring component composition A liquid and the decoloring component composition B liquid contains a gelling agent.
本発明の好ましい態様は、パラローズアニリン誘導体、酸性物質、ゲル化剤及び水を含む呈色成分組成物Ａ液と、亜硫酸又はその塩、ゲル化剤及び水を含む脱色成分組成物Ｂ液とからなるアルデヒド化合物検知組成物からなる２液混合型のアルデヒド化合物検知組成物(２液混合型のキット組成物)である。 A preferred embodiment of the present invention is a color developing component composition A liquid containing a pararose aniline derivative, an acidic substance, a gelling agent and water, and a decoloring component composition B liquid containing sulfurous acid or a salt thereof, a gelling agent and water, A two-component mixed aldehyde compound detecting composition (two-component mixed kit composition) comprising an aldehyde compound detecting composition comprising:
このように本発明の組成物は、既述のように、パラローズアニリン誘導体と二亜硫酸ナトリウム（Na2S2O5）を分けておき、使用直前に混合することにより、上記使用前の発色を防止することができる。しかも、前記呈色成分組成物Ａ液と前記脱色成分組成物Ｂ液を使用の際に混合し、混合による脱色過程を経て透明ゲル液となった後、当該透明ゲル液を検知対象の雰囲気に暴露させることにより、ゲル状組成物であっても、ガス、水溶液中のアルデヒド化合物を良好に検知して発色することができ、インジケータインキとして保存安定性が向上する。 As described above, the composition of the present invention, as described above, separates the pararose aniline derivative and sodium disulfite (Na 2 S 2 O 5 ) and mixes them immediately before use, so that the color before use is obtained. Can be prevented. In addition, the coloring component composition A liquid and the decoloring component composition B liquid are mixed at the time of use, and after passing through a decoloring process by mixing to become a transparent gel liquid, the transparent gel liquid is brought into the atmosphere to be detected. By exposing, even if it is a gel-like composition, the aldehyde compound in gas and aqueous solution can be detected well, and it can color, and storage stability improves as indicator ink.
（呈色成分組成物Ａ液）
本発明の呈色成分組成物Ａ液において用いられるアルデヒドの呈色試薬としては、シッフ試薬の呈色成分として用いられるパラローズアニリン(Para Rosaniline)、ローズアニリン(Rosaniline)などのパラローズアニリン誘導体である。また、パラローズアニリン塩酸塩、ローズアニリン塩酸塩なども用いることができる。
(Coloring component composition A liquid)
Examples of the aldehyde coloring reagent used in the coloring component composition A solution of the present invention include para-rose aniline derivatives such as para-rose aniline and rose aniline used as the coloring component of the Schiff reagent. is there. Moreover, pararose aniline hydrochloride, rose aniline hydrochloride, etc. can also be used.
前記呈色試薬は、色素等の呈色成分量において、本発明の検知組成物全量に対して０．００５〜５．０重量％含有させることが好ましい。 The coloring reagent is preferably contained in an amount of 0.005 to 5.0% by weight with respect to the total amount of the detection composition of the present invention in the amount of coloring components such as pigments.
なお、パラローズアニリン誘導体は、本発明の検知組成物全量に対して好ましくは０．００５〜２．０重量％、より好ましくは０．１〜０．５重量％含有する。上記呈色成分量が２．０重量％を超える場合は水溶化し難く、上記呈色成分量が０．００５重量％未満の場合はゲル組成物において着色力に劣る。 The para-rose aniline derivative is preferably contained in an amount of 0.005 to 2.0% by weight, more preferably 0.1 to 0.5% by weight, based on the total amount of the detection composition of the present invention. When the amount of the coloring component exceeds 2.0% by weight, water-solubilization is difficult, and when the amount of the coloring component is less than 0.005% by weight, the gel composition is inferior in coloring power.
本発明の組成物には、酸性物質を含有することができる。特に、ホルムアルデヒドの検知対象物質に用いるゲル状組成物であって、パラローズアニリン誘導体を呈色成分とし、水を含む検知組成物の場合、酸性物質を含有することが望ましい。そして、検知感度と検知組成物としての安定性を確保するため、水素イオン濃度ｐＨを３以下、好ましくはｐＨ２以下、更に好ましくはｐＨ１．５以下に調整することが好ましい。水素イオン濃度ｐＨ３を超えると、呈色成分組成物Ａ液と脱色成分組成物Ｂ液とを混合してゲル状検知組成物とした場合、水分が蒸発すると、着色しやすく、検知組成物としての感度及び安定性が低下する。 The composition of the present invention can contain an acidic substance. In particular, in the case of a gel-like composition used for a formaldehyde detection target substance, the detection composition containing pararose aniline derivative as a color component and containing water, it is desirable to contain an acidic substance. In order to secure detection sensitivity and stability as a detection composition, the hydrogen ion concentration pH is preferably adjusted to 3 or less, preferably pH 2 or less, more preferably pH 1.5 or less. When the hydrogen ion concentration exceeds pH 3, when the coloring component composition A liquid and the decoloring component composition B liquid are mixed to form a gel-like detection composition, when the water evaporates, the liquid tends to be colored, Sensitivity and stability are reduced.
また前記シッフ試薬を含む前記検知組成物の場合、上記酸性物質として、スルホン基を有する有機酸及び又はその金属塩を含有させることが、検知感度と検知組成物としての安定性がより向上するため好ましい。スルホン基を有する有機酸及び又はその金属塩の一例を挙げれば、スルホサリチル酸、ｐ−トルエンスルホン酸、スルファミン酸、これらの各金属塩である。中でも、スルホサリチル酸、ｐ−トルエンスルホン酸、又はこれらの各塩を用いることが好適である。 In addition, in the case of the detection composition containing the Schiff reagent, inclusion of an organic acid having a sulfone group and / or a metal salt thereof as the acidic substance improves detection sensitivity and stability as the detection composition. preferable. An example of an organic acid having a sulfone group and / or a metal salt thereof is sulfosalicylic acid, p-toluenesulfonic acid, sulfamic acid, and their respective metal salts. Of these, it is preferable to use sulfosalicylic acid, p-toluenesulfonic acid, or salts thereof.
なお、前記酸性物質は、既述の通り、ｐＨを３以下に調整できる範囲内で含ませることが好ましい。従って、前記酸性物質は、過剰に添加しても、アルカリ物質でｐＨを３以下に調整しても可能である。また、ホルムアルデヒドを検知対象物質とする場合、前記酸性物質は、スルホン基を有する有機酸及び又はその金属塩と、無機酸、有機酸を併用しても可能である。なお、酸性を呈する体質顔料を含ませることもできる。 In addition, it is preferable to contain the said acidic substance in the range which can adjust pH to 3 or less as stated above. Therefore, the acidic substance can be added in excess, or the pH can be adjusted to 3 or less with an alkaline substance. Moreover, when formaldehyde is used as the detection target substance, the acidic substance can be used in combination with an organic acid having a sulfone group and / or a metal salt thereof, an inorganic acid, and an organic acid. In addition, an extender exhibiting acidity can also be included.
（脱色成分組成物Ｂ液）
前記パラローズアニリン誘導体を脱色する成分（サルファイト試薬）としては、亜硫酸又は亜硫酸塩を用いることができる。具体的には、二亜硫酸ナトリウム、亜硫酸ナトリウム、亜硫酸水素ナトリウム、二亜硫酸カリウム、亜硫酸カリウム、亜硫酸水素カリウム、二亜硫酸ナトリウムを例示することができるが、特に限定されない。前記亜硫酸又は亜硫酸塩は、本発明の組成物全量に対して０．００５〜５重量％、好ましくは０．０５〜２重量％含有することが好ましい。前記亜硫酸又は亜硫酸塩が０．００５重量％未満の場合、ゲル組成物において変色し難くなる。前記亜硫酸又は亜硫酸塩が５重量％を超えると、ゲル組成物において検出感度が低下する。
(Decolorization component composition B liquid)
As a component (sulfite reagent) for decolorizing the pararose aniline derivative, sulfite or sulfite can be used. Specific examples include sodium disulfite, sodium sulfite, sodium hydrogen sulfite, potassium disulfite, potassium sulfite, potassium hydrogen sulfite, and sodium disulfite, but are not particularly limited. The sulfurous acid or sulfite is contained in an amount of 0.005 to 5% by weight, preferably 0.05 to 2% by weight, based on the total amount of the composition of the present invention. When the sulfurous acid or sulfite is less than 0.005% by weight, the gel composition is hardly discolored. When the sulfurous acid or sulfite exceeds 5% by weight, the detection sensitivity of the gel composition is lowered.
なお、ホルムアルデヒドガスの場合は０．０５ｐｐｍ以上、ホルムアルデヒドを含む液体の場合は濃度０．２５ｍｇ／Ｌ以上のホルムアルデヒドが存在すれば色が明瞭に変化してその存在を検知できる。 In the case of formaldehyde gas, the presence of formaldehyde having a concentration of 0.05 ppm or more, and in the case of a liquid containing formaldehyde, the presence of formaldehyde having a concentration of 0.25 mg / L or more clearly changes its color and can be detected.
脱色成分組成物Ｂ液の水素イオン濃度はｐＨ７以上であることが好ましい。これは、亜硫酸が酸性雰囲気で徐々に硫酸へ変化することを防止するためである。なお、このpHに調整するアルカリ物質としては、不揮発性で無機アルカリ物質が好ましい。例えば、水酸化ナトリウムなどを用いることができる。 It is preferable that the hydrogen ion concentration of the decolorization component composition B liquid is pH 7 or more. This is to prevent the sulfurous acid from gradually changing to sulfuric acid in an acidic atmosphere. In addition, as an alkaline substance adjusted to this pH, a non-volatile inorganic inorganic substance is preferable. For example, sodium hydroxide can be used.
（ゲル化剤）
本発明の呈色成分組成物Ａ液及び／又は亜硫酸又はその塩及び水を含む脱色成分組成物Ｂ液で用いられゲル化剤は、検知対象物質に対する呈色試薬の呈色反応に影響を与えずに、組成物をゲル化することができるゲル化剤であることが重要である。また、水或は、水及び呈色試薬を含む各種配合成分をゲル化すことができるゲル化剤であれば限定されない。また、本発明の組成物は、当該組成物に流動性或は粘弾性を持たせるゲル化剤であることが重要である。一例を挙げれば、微生物産系多糖類及びその誘導体が用いられる。例えば、プルラン、ザンサンガム、ウェランガム、ラムザンガム、サクシノグルカン、デキストラン、アルカシーガム等を例示することができる。また、水溶性植物系多糖類およびその誘導体が用いられる。例えば、トラガンシガム、グァーガム、タラガム、ローカストビーンガム、ガティガム、アラビノガラクタンガム、アラビアガム、クイスシードガム、ペクチン、デンプン、サイリュームシードガム、ペクチン、カラギーナン、アルギン酸、寒天等を例示することができる。
(Gelling agent)
The gelling agent used in the coloring component composition A liquid and / or the decoloring component composition B liquid containing sulfurous acid or a salt thereof and water affects the color reaction of the coloring reagent to the detection target substance. It is important that the composition is a gelling agent that can gel the composition. Moreover, it will not be limited if it is a gelatinizer which can gelatinize the various compounding components containing water or water and a color reagent. In addition, it is important that the composition of the present invention is a gelling agent that gives the composition fluidity or viscoelasticity. As an example, microbial polysaccharides and derivatives thereof are used. For example, pullulan, xanthan gum, welan gum, rhamzan gum, succinoglucan, dextran, alkathy gum and the like can be exemplified. In addition, water-soluble plant polysaccharides and derivatives thereof are used. Examples thereof include traganci gum, guar gum, tara gum, locust bean gum, gati gum, arabinogalactan gum, arabic gum, quise seed gum, pectin, starch, silium seed gum, pectin, carrageenan, alginic acid, agar and the like.
本発明に用いられるゲル化剤としては、水にチキソトロピー性を付与する事ができるチキソトロピー付与剤が好ましい。このような要請をすべて満足するゲル化剤として、既述したゲル化剤が好ましいが、特にサクシノグリカン、ウェランガム、キサンタンガム、アルカシーガム、グアーガムを挙げることができる。これらは、例えばパラローズアニリン誘導体の呈色成分を含む呈色試薬の呈色反応を阻害することなく、ホルムアルデヒドのガス及び同ガスを含む液体に対して精度のある濃度検知を達成することができる。 As the gelling agent used in the present invention, a thixotropic agent capable of imparting thixotropic properties to water is preferable. As the gelling agent that satisfies all such requirements, the gelling agents described above are preferable, and succinoglycan, welan gum, xanthan gum, alkasy gum, and guar gum can be particularly mentioned. These can achieve accurate concentration detection for formaldehyde gas and liquid containing the same gas without inhibiting the color reaction of the color reagent containing the color component of the pararose aniline derivative, for example. .
前記ゲル化剤は、本発明の組成物全量に対して０．１〜５．０重量％含有させることが好ましい。 The gelling agent is preferably contained in an amount of 0.1 to 5.0% by weight based on the total amount of the composition of the present invention.
前記組成物に流動性を持たせるゲル化剤を用いた場合、Ｅ型粘度計にて測定した２０℃における粘度が１，０００ｍＰａ・ｓ以上であるゲル状のインジケーターとすることが好ましい。 When a gelling agent for imparting fluidity to the composition is used, it is preferable to use a gel-like indicator having a viscosity at 20 ° C. measured by an E-type viscometer of 1,000 mPa · s or more.
なお、寒天のように、前記組成物に粘弾性を持たせるゲル化剤を用いた場合は、ゼリー強度が３０〜２，０００ｇ／ｃｍ２のものが好適である。ここで、本発明における組成物のゼリー強度は日寒水式測定法にて実施して特定された値であり、寒天ゲルの表面１ｃｍ２当り２０秒間耐える最大重量（ｇ）をもって「ゼリー強度」とする。 In addition, when a gelling agent that gives viscoelasticity to the composition, such as agar, is used, those having a jelly strength of 30 to 2,000 g / cm 2 are preferable. Here, the jelly strength of the composition in the present invention is a value specified by carrying out the measurement using the Nissho water method, and the “jelly strength” is the maximum weight (g) that can withstand 20 seconds per 1 cm 2 of the surface of the agar gel. To do.
(その他の成分)
水は、本発明の組成物全量に対して少なくとも５０重量％含むことが好ましい。他に例えばエチレングリコール、プロピレングリコール、グリセリン等の水溶性有機溶剤、アルコルビン酸などの酸化防止剤、防腐・防黴剤など、各種添加剤を配合することができる。特に、前記水溶性有機溶剤は本発明のゲル状組成物において一定の含水状態を保持することができるため、一定の呈色反応を確保することができ、濃度検知の精度を高める上で好ましい。また前記アルコール類、多価アルコール類などの水溶性有機溶剤は湿潤剤として用いることができ、インジケーターインキ組成物として用いる場合に好ましい。また染料を溶解させるための水溶性有機溶剤を用いることもできる。
(Other ingredients)
Water is preferably included at least 50% by weight based on the total amount of the composition of the present invention. In addition, various additives such as water-soluble organic solvents such as ethylene glycol, propylene glycol, and glycerin, antioxidants such as alcorbic acid, antiseptic / antifungal agents, and the like can be blended. In particular, the water-soluble organic solvent can maintain a constant water-containing state in the gel composition of the present invention, so that a constant color reaction can be ensured and is preferable for enhancing the accuracy of concentration detection. Water-soluble organic solvents such as the alcohols and polyhydric alcohols can be used as a wetting agent and are preferred when used as an indicator ink composition. A water-soluble organic solvent for dissolving the dye can also be used.
前記水溶性有機溶剤は、本発明の組成物中に含まれなくてもよいが、好ましくは本発明の組成物全量に対して０．１〜２０重量％、より好ましくは１〜１０重量％である。前記水溶性有機溶剤の含有量が本発明の組成物全量に対して２０重量％を超える場合は、濃度検知の精度(感度)が低下する。 The water-soluble organic solvent may not be contained in the composition of the present invention, but is preferably 0.1 to 20% by weight, more preferably 1 to 10% by weight based on the total amount of the composition of the present invention. is there. When the content of the water-soluble organic solvent exceeds 20% by weight with respect to the total amount of the composition of the present invention, the accuracy (sensitivity) of concentration detection decreases.
本発明の検知組成物であれば、本発明の組成物の各種態様において、当該組成物を密閉容器内に充填保管し、検知対象となる雰囲気に前記組成物を暴露して、変色の度合でホルムアルデヒドガスなどの検知対象物質の濃度を検知する検知方法を採用することができる。また、例えばかかる検知方法に用いられるインジケーターとして、既述したように、本発明の前記組成物が充填保管された密閉容器を備え、前記密閉容器が、フィルム、チューブ、スタンプ、筆記具のいずれかであるインジケーターを採用することができる。本発明の前記組成物をインキ組成物として構成することにより、これをスタンプ或は筆記具のインキ収容部に収容することによって、検知雰囲気下にある箇所にスタンプ或は筆記し、当該部分において検知対象物質を検知することができる。なお、本組成物は、密閉されたチューブ状容器のみならず、袋詰、密閉プラスチック容器に充填することも可能である。なお、密閉手段は限定されない。また密閉を開封する等の解除手段も限定されない。 If it is the detection composition of the present invention, in various embodiments of the composition of the present invention, the composition is filled and stored in a sealed container, the composition is exposed to the atmosphere to be detected, and the degree of discoloration. A detection method for detecting the concentration of a substance to be detected such as formaldehyde gas can be employed. In addition, for example, as described above, as an indicator used in such a detection method, it includes a sealed container filled and stored with the composition of the present invention, and the sealed container is any one of a film, a tube, a stamp, and a writing instrument. Some indicators can be employed. By constituting the composition of the present invention as an ink composition, this is contained in an ink containing portion of a stamp or a writing instrument, so that a stamp or writing is made at a place in a detection atmosphere, and the object to be detected in that portion. Substances can be detected. In addition, this composition can be filled not only in a sealed tubular container but also in a bag or a sealed plastic container. The sealing means is not limited. Also, the releasing means such as opening the seal is not limited.
このような各種態様に係る本発明の検知組成物であれば、水性ゲルであるため、固体のインジケーターと異なり呈色反応が容易に起こり、非常に早く検知結果が出る。既述した様な固体のインジケーター呈色試薬を用い乾燥した前記印刷物のインジケーターでは、気固反応であるため呈色の変化が完了するまでに８〜２４時間必要であるが、本発明の組成物によれば、ホルムアルデヒドガス等の検知対象物の濃度と呈色色素の濃度により変わるが、例えば５〜１８０分ほどの短時間で検知することができる。また、本発明の検知組成物は、流動性を持つ水性ゲルであるため、液層のインジケーターと異なり、検知する場所を選ばず、室内を含め各種の雰囲気にそのまま適用して検知することができる。特に、スルホン基を有する有機酸及び又はその金属塩を含む前記ゲル状の検知組成物の場合、安定した優れた感度でホルムアルデヒドを検知できるため好ましい。 Since the detection composition of the present invention according to such various embodiments is an aqueous gel, unlike a solid indicator, a color reaction easily occurs and a detection result is obtained very quickly. The printed indicator dried using the solid indicator coloring reagent as described above is a gas-solid reaction and requires 8 to 24 hours to complete the color change, but the composition of the present invention. According to the method, although it varies depending on the concentration of the detection object such as formaldehyde gas and the concentration of the coloring pigment, it can be detected in a short time of about 5 to 180 minutes, for example. In addition, since the detection composition of the present invention is an aqueous gel having fluidity, unlike a liquid layer indicator, the detection composition can be applied to various atmospheres including a room as it is without being detected. . In particular, the gel-like detection composition containing an organic acid having a sulfone group and / or a metal salt thereof is preferable because formaldehyde can be detected with stable and excellent sensitivity.
（製造方法）
本発明の製造方法は限定されないが、呈色成分組成物Ａ液は、パラローズアニリン塩酸塩と水を混合し、これにスルホン基を有する有機酸を加えた後、さらに活性炭を加えて濾過し、この濾過された液にゲル化剤水溶液及び必要に応じてその他添加剤を加えて製造できる。また、脱色成分組成物Ｂ液は、亜硫酸又はその塩と水とを混合し、これにゲル化剤水溶液及びその他の添加剤を加えて製造することができる。
(Production method)
Although the production method of the present invention is not limited, the coloring component composition A liquid is prepared by mixing pararose aniline hydrochloride and water, adding an organic acid having a sulfone group thereto, and further adding activated carbon and filtering. The filtered liquid can be produced by adding an aqueous gelling agent solution and other additives as required. Moreover, the decoloring component composition B liquid can be manufactured by mixing sulfurous acid or a salt thereof and water, and adding an aqueous gelling agent solution and other additives thereto.
表１に示す組成で、パラローズアニリン塩酸塩と水を混合し１時間攪拌した後、これにスルホン基を有する有機酸を加えて３０分攪拌後、さらに活性炭を加えて１時間放置し濾過する。この濾過された液にゲル化剤水溶液及び必要に応じてその他添加剤を加えて３０分間攪拌し、各実施例の呈色成分組成物Ａ液を得た。また同様に、表１に示す組成で、亜硫酸又はその塩と水とを３０分混合攪拌し、これにゲル化剤水溶液及びその他の添加剤を加えて３０分攪拌し各実施例の脱色成分組成物Ｂ液を得た。
なお、比較例として、表１に示す組成で混合一体化組成の検知組成物もあわせて作成した。すなわち、表１に示す組成で、パラローズアニリン塩酸塩と水を混合し１時間攪拌し、この水溶液に亜硫酸又はその塩を加えて３０分攪拌し、続いてスルホン基を有する有機酸を加えて３０分撹拌し、活性炭を加えて１時間放置し透明液とした後、Ｎｏ．５Ｃの濾紙でろ過し、これにゲル化剤水溶液を加え、無色〜白色透明の比較例のゲル状の検知組成物を得た。
In the composition shown in Table 1, pararose aniline hydrochloride and water were mixed and stirred for 1 hour, and then an organic acid having a sulfone group was added thereto, followed by stirring for 30 minutes. . An aqueous gelling agent solution and other additives as necessary were added to the filtered liquid and stirred for 30 minutes to obtain a color component composition A liquid of each Example. Similarly, in the composition shown in Table 1, sulfurous acid or a salt thereof and water are mixed and stirred for 30 minutes, and an aqueous gelling agent solution and other additives are added thereto and stirred for 30 minutes. A product B liquid was obtained.
As a comparative example, a detection composition having a mixed integrated composition with the composition shown in Table 1 was also prepared. That is, in the composition shown in Table 1, pararose aniline hydrochloride and water were mixed and stirred for 1 hour, sulfurous acid or a salt thereof was added to this aqueous solution and stirred for 30 minutes, and then an organic acid having a sulfone group was added. After stirring for 30 minutes, activated carbon was added and allowed to stand for 1 hour to make a transparent liquid. It filtered with 5C filter paper, the gelatinizer aqueous solution was added to this, and the gel-like detection composition of the comparative example of colorless-white transparent was obtained.
＜評価＞
次に、表１に示す実施例及び比較例の各組成物をそれぞれ５ｍｌのポリ容器に３ｇ充填したものを評価サンプルとし、ホルムアルデヒドガス及びホルムアルデヒド水溶液についしてそれぞれ変色特性を評価した。なお、実施例の上記サンプルは、呈色成分組成物Ａ液と脱色成分組成物Ｂ液について、Ａ液：Ｂ液＝２：１（重量比）の割合で混合させたものをサンプルとした。
<Evaluation>
Next, each of the compositions of Examples and Comparative Examples shown in Table 1 was filled with 3 g in a 5 ml plastic container as an evaluation sample, and the discoloration characteristics were evaluated for formaldehyde gas and formaldehyde aqueous solution, respectively. In addition, the said sample of the Example made the sample which mixed the coloring component composition A liquid and the decoloring component composition B liquid in the ratio of A liquid: B liquid = 2: 1 (weight ratio).
（ホルムアルデヒドガスの変色試験）
デシケータ中に上記各検知組成物の評価サンプルを設置した後、ホルムアルデヒド濃度既知のガスを封入し、暴露試験を実施する。暴露時間は４時間である。
(Formaldehyde gas discoloration test)
After installing the evaluation sample of each detection composition in a desiccator, a gas with a known formaldehyde concentration is sealed and an exposure test is performed. The exposure time is 4 hours.
（ホルムアルデヒド水溶液の変色試験）
上記各評価サンプルに濃度既知のホルマリン水溶液を添加し、変色の有無を確認した。また、保存安定性を評価するため、４０℃で１ヵ月後保存後に混合した後の初期の変色の有無及びその変色性能を評価した。変色性能の評価は、変色がない場合に○、変色がある場合は×として示している。
以上の結果を表１に示す。表１より、実施例の組成物はいずれも良好な検知特性を有していることが認められる。これに対して、比較例１はすでにピンク色に変色していた。
(Discoloration test of formaldehyde aqueous solution)
A formalin aqueous solution with a known concentration was added to each of the above evaluation samples, and the presence or absence of discoloration was confirmed. Further, in order to evaluate the storage stability, the presence or absence of an initial color change after mixing after storage at 40 ° C. for 1 month and the color change performance thereof were evaluated. The evaluation of the discoloration performance is indicated by ◯ when there is no discoloration and by × when there is discoloration.
The results are shown in Table 1. From Table 1, it can be seen that all of the compositions of the examples have good detection characteristics. In contrast, Comparative Example 1 had already changed to pink.
本発明の組成物は、パラローズアニリン誘導体、酸性物質及び水を含む呈色成分組成物Ａ液と、亜硫酸又はその塩及び水を含む脱色成分組成物Ｂ液からなる２液混合型組成物であって、前記呈色成分組成物Ａ液、前記脱色成分組成物Ｂ液のうち、少なくともいずれかにゲル化剤が含まれているアルデヒド化合物検知組成物であり、好ましくは、パラローズアニリン誘導体、酸性物質、ゲル化剤及び水を含む呈色成分組成物Ａ液と、亜硫酸又はその塩、ゲル化剤及び水を含む脱色成分組成物Ｂ液とからなるアルデヒド化合物検知組成物(２液混合型キット組成物)であるので、加熱又は長期間保存しても亜硫酸の飛散がなく、使用前に発色することがなく、しかも冷蔵保存しなくても使用することが可能である。 The composition of the present invention is a two-component mixed composition comprising a color developing component composition A liquid containing a pararose aniline derivative, an acidic substance and water, and a decoloring component composition B liquid containing sulfurous acid or a salt thereof and water. An aldehyde compound detection composition in which at least one of the coloring component composition A liquid and the decoloring component composition B liquid contains a gelling agent, preferably a pararose aniline derivative, Aldehyde compound detection composition comprising a coloring component composition A liquid containing an acidic substance, a gelling agent and water, and a decoloring component composition B liquid containing sulfurous acid or a salt thereof, a gelling agent and water (two-component mixed type) Kit composition), it does not scatter sulfurous acid even when heated or stored for a long period of time, does not develop color before use, and can be used without refrigerated storage.
従って、本発明の検知組成物を、例えば、フィルム、チューブに含ませて、或はインキ組成物としてスタンプ、筆記具などに含ませて、使用時に、検知対象となる雰囲気において、フィルムに穴をあけ、或はチューブから搾り出し、スタンプし、筆記する等すれば、当該雰囲気に前記組成物を暴露することができ、即座にホルムアルデヒド等の検知対象物の濃度を検知することができる。
Accordingly, the detection composition of the present invention is included in, for example, a film or tube, or is included in a stamp, writing instrument, or the like as an ink composition, and a hole is formed in the film in an atmosphere to be detected at the time of use. Alternatively, if the composition is squeezed from a tube, stamped, written, etc., the composition can be exposed to the atmosphere, and the concentration of a detection target such as formaldehyde can be detected immediately.
Claims (7)
亜硫酸又はその塩及び水を含む脱色成分組成物Ｂ液からなる２液混合型組成物であって、
前記呈色成分組成物Ａ液、前記脱色成分組成物Ｂ液のうち、少なくともいずれかにゲル化剤が含まれているアルデヒド化合物検知組成物。 A color developing component composition A containing a pararose aniline derivative, an acidic substance and water;
A two-component mixed composition comprising a decolorizing component composition B solution containing sulfurous acid or a salt thereof and water,
An aldehyde compound detection composition in which at least one of the coloring component composition A liquid and the decoloring component composition B liquid contains a gelling agent.
亜硫酸又はその塩、ゲル化剤及び水を含む脱色成分組成物Ｂ液と
からなるアルデヒド化合物検知組成物。 A coloring component composition A liquid containing a pararose aniline derivative, an acidic substance, a gelling agent and water;
An aldehyde compound detection composition comprising a decolorization component composition B solution containing sulfurous acid or a salt thereof, a gelling agent and water.
A method for producing a decolorization component composition B liquid, comprising mixing sulfurous acid or a salt thereof and water and adding an aqueous gelling agent solution thereto.
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