JPH10142234A - Oil content measuring device - Google Patents
Oil content measuring deviceInfo
- Publication number
- JPH10142234A JPH10142234A JP31877296A JP31877296A JPH10142234A JP H10142234 A JPH10142234 A JP H10142234A JP 31877296 A JP31877296 A JP 31877296A JP 31877296 A JP31877296 A JP 31877296A JP H10142234 A JPH10142234 A JP H10142234A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- sample
- flow path
- water
- extraction solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、排水など液体中
に含まれる油分を測定する油分測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil content measuring device for measuring an oil content contained in a liquid such as waste water.
【０００２】[0002]
【従来の技術およびその問題点】前記油分測定装置の一
つに、フローインジェクション分析法がある。図３は、
フローインジェクション分析法による従来の一つの油分
測定装置の構成を概略的に示すもので、この図におい
て、３０は一つの非水系流路で、その上流側には抽出溶
媒としての四塩化炭素３１を収容した溶媒タンク３２が
接続されている。そして、この非水系流路３０には、吸
引ポンプ３３、測定試料ａを注入するためのシリンジな
どの注入器３４と注入用バルブ３５とからなる注入部３
６、混合部としてのミキシングコイル３７、測定試料ａ
に含まれた油分を溶解させた溶媒と水とに分離する分離
部３８、この分離部３８から供給される油分を溶解させ
た溶媒中の油分を測定する油分濃度検出部３９がこの順
に設けられている。2. Description of the Related Art One of the oil content measuring devices is a flow injection analysis method. FIG.
FIG. 1 schematically shows a configuration of one conventional oil content measuring device by a flow injection analysis method. In this figure, reference numeral 30 denotes one non-aqueous channel, and a carbon tetrachloride 31 as an extraction solvent is provided upstream of the channel. The contained solvent tank 32 is connected. The non-aqueous flow path 30 is provided with an injection section 3 including a suction pump 33, an injector 34 such as a syringe for injecting the measurement sample a, and an injection valve 35.
6. Mixing coil 37 as mixing section, measurement sample a
A separation unit 38 for separating the oil contained in the oil into a solvent in which the oil is dissolved and water, and an oil concentration detection unit 39 for measuring the oil in the solvent in which the oil supplied from the separation 38 is dissolved are provided in this order. ing.
【０００３】前記油分濃度検出部３９は、例えば赤外分
光光度計よりなり、図６に示すように構成されている。
すなわち、この図において、４０はフローセルで、その
本体４１の両端部が赤外透過性のセル窓４２ａ，４２ｂ
で封止され、分離部３８の溶媒出口側に接続された流路
（図示してない）が接続されるサンプル導入口４３と排
水流路（図示してない）に接続されたサンプル導出口４
４とを備えている。そして、４５はフローセル４０の一
方のセル窓４２ａ側に設けられた赤外光源、４６はフロ
ーセル４０の他方のセル窓４２ｂ側に設けられ、波長が
例えば３．０〜３．５μｍの干渉フィルタ４７を備えた
半導体検出器よりなる赤外線検出器、４８は赤外線検出
器４６の出力を処理して油分濃度を算出する濃度演算部
である。[0003] The oil concentration detector 39 is composed of, for example, an infrared spectrophotometer, and is configured as shown in FIG.
That is, in this figure, reference numeral 40 denotes a flow cell, and both ends of a main body 41 of the flow cell are infrared-transparent cell windows 42a, 42b.
And a sample outlet 43 connected to a channel (not shown) connected to the solvent outlet side of the separation unit 38 and a sample outlet 4 connected to a drainage channel (not shown).
4 is provided. An infrared light source 45 is provided on one cell window 42a side of the flow cell 40, and an interference filter 47 is provided on the other cell window 42b side of the flow cell 40 and has a wavelength of, for example, 3.0 to 3.5 μm. An infrared detector 48 composed of a semiconductor detector provided with a sensor 48 is a concentration calculator for processing the output of the infrared detector 46 and calculating the oil concentration.
【０００４】上記構成よりなる油分測定装置において
は、吸引ポンプ３３の動作により非水系流路３０に抽出
溶媒３１が流れている状態で、注入器３４から油分を含
む試料としての排水ａを注入する。この注入された排水
ａは、抽出溶媒３１とともにミキシングコイル３７に至
り、ここで抽出溶媒３１と混合されて、排水ａ中の油分
は抽出溶媒３１に抽出される。その後、油分を含む抽出
溶媒３１は分離部３８において、水と分離され、油分濃
度検出部３９にサンプルＳとして供給され、ここでサン
プルＳ中の油分が測定される。[0004] In the oil content measuring device having the above-described configuration, the drainage a as a sample containing oil is injected from the injector 34 while the extraction solvent 31 is flowing through the non-aqueous channel 30 by the operation of the suction pump 33. . The injected wastewater a reaches the mixing coil 37 together with the extraction solvent 31, where it is mixed with the extraction solvent 31, and the oil in the wastewater a is extracted by the extraction solvent 31. Thereafter, the extraction solvent 31 containing oil is separated from water in the separation section 38 and supplied as a sample S to the oil concentration detection section 39, where the oil content in the sample S is measured.
【０００５】しかしながら、上記油分測定装置において
は、抽出溶媒３１の流れの中に排水ａが注入されるた
め、排水ａの注入直後においては抽出溶媒３１の流れを
断ち切ることになり、排水ａだけの部分が生ずことがあ
る。この種の油分測定においては、排水ａ中の油分を抽
出溶媒３１に確実に抽出する必要があり、そのために
は、排水ａと抽出溶媒３１とを均一に混合しなければな
らない。そのため、従来においては、ミキシングコイル
３７として内径の大きいものを用いなければならず、結
果的に多くの抽出溶媒３１が必要となる。このように多
くの抽出溶媒を用いると、油分がより希釈されることに
なり、検出感度の低下をもたらすとともに、抽出溶媒が
徒に浪費されることになる。However, in the above-described oil content measuring device, since the drainage a is injected into the flow of the extraction solvent 31, the flow of the extraction solvent 31 is cut off immediately after the injection of the drainage a. Parts may not be produced. In this type of oil measurement, it is necessary to reliably extract the oil in the wastewater a into the extraction solvent 31, and for that purpose, the wastewater a and the extraction solvent 31 must be uniformly mixed. For this reason, conventionally, a coil having a large inner diameter must be used as the mixing coil 37, and as a result, a large amount of the extraction solvent 31 is required. When such a large amount of extraction solvent is used, the oil component is further diluted, which lowers the detection sensitivity and wastes the extraction solvent.
【０００６】上述の単一フロー系の装置の欠点を改良す
るものとして、二つのフロー系を並列的に設け、これら
のフロー系の合流点より下流側において、両フロー系を
流れる液体を混合する混合部を設け、この混合部の下流
側に混合部からの混合液を油分を溶解させた溶媒と水と
に分離する分離部を設け、さらに、この混合部の下流側
に油分を溶解させた溶媒がサンプルとして供給され、前
記油分の濃度を測定する油分濃度検出部を設けた油分測
定装置がある。図４および図５は、このような二つのフ
ロー系を備えた従来の油分測定装置を示すものである。As an improvement over the above-mentioned disadvantages of the single flow system, two flow systems are provided in parallel, and the liquids flowing through the two flow systems are mixed at a downstream side of the junction of these flow systems. A mixing section was provided, and a separation section was provided downstream of the mixing section to separate the mixed liquid from the mixing section into a solvent in which the oil was dissolved and water, and further, the oil was dissolved downstream of the mixing section. There is an oil content measuring device provided with a solvent as a sample and provided with an oil concentration detecting unit for measuring the oil concentration. FIGS. 4 and 5 show a conventional oil content measuring device provided with such two flow systems.
【０００７】すなわち、図４および図５において、１は
抽出溶媒が流れる抽出溶媒系流路、２は水が流れる水系
流路で、互いに並列的に配置されている。抽出溶媒系流
路１には抽出溶媒としての四塩化炭素３を収容した溶媒
タンク４と吸引ポンプ５が設けられ、水系流路２には、
水６を収容した水タンク７と吸引ポンプ８が設けられて
いる。そして、これら両流路１，２の下流側が合流点９
で合流し、この合流点９の下流側に混合部としてのミキ
シングコイル１０、分離部１１、油分濃度検出部１２が
設けられている。なお、部材１０〜１２のそれぞれは、
前記図３に示した部材３７〜３９と同様構成のものであ
る。More specifically, in FIGS. 4 and 5, reference numeral 1 denotes an extraction solvent flow path through which an extraction solvent flows, and 2 denotes an aqueous flow path through which water flows, which are arranged in parallel with each other. An extraction solvent system flow path 1 is provided with a solvent tank 4 containing carbon tetrachloride 3 as an extraction solvent and a suction pump 5, and an aqueous flow path 2 has
A water tank 7 containing water 6 and a suction pump 8 are provided. The downstream side of the two flow paths 1 and 2 is joined at a junction 9.
At the downstream side of the junction 9, a mixing coil 10 as a mixing unit, a separation unit 11, and an oil concentration detection unit 12 are provided. Each of the members 10 to 12 is
It has the same configuration as the members 37 to 39 shown in FIG.
【０００８】そして、図４に示すものにおいては、抽出
溶媒系流路１の吸引ポンプ５と合流点９との間に、シリ
ンジなどの注入器１３が接続された注入用バルブ１４が
介装されており、図５に示すものにおいては、水系流路
２の吸引ポンプ８と合流点９との間に、注入器１３が接
続された注入用バルブ１４が介装されている。In FIG. 4, an injection valve 14 to which an injector 13 such as a syringe is connected is interposed between the suction pump 5 and the junction 9 of the extraction solvent system flow path 1. In FIG. 5, an injection valve 14 to which an injector 13 is connected is interposed between the suction pump 8 and the junction 9 of the aqueous flow path 2.
【０００９】上記図４および図５にそれぞれ示した油分
測定装置の構成においては、まず、注入器１３を介し
て、標準試料としてオクタン・セタン・ベンゼン混合標
準物質（以下、ＯＣＢ標準物質という）を注入し、この
ＯＣＢ標準物質がミキシングコイル１０および分離部１
１を経て得られる液体をサンプルとして油分濃度検出部
１２に供給して、検量線を求める。次いで、注入器１３
を介して、分析対象の排水を注入し、この排水がミキシ
ングコイル１０および分離部１１を経て得られるサンプ
ルを油分濃度検出部１２に供給して、これに含まれる油
分濃度を測定するのである。このようにした場合、ミキ
シングコイル１０における混合効率が向上し、少量の抽
出溶媒３を用いるだけで所定の測定を行うことができ
る。In the configuration of the oil content measuring device shown in FIGS. 4 and 5, first, an octane-cetane-benzene mixed standard material (hereinafter referred to as an OCB standard material) is supplied as a standard sample via an injector 13. The OCB standard material is mixed with the mixing coil 10 and the separation unit 1.
The liquid obtained through step 1 is supplied as a sample to the oil concentration detector 12 to obtain a calibration curve. Next, the injector 13
, The wastewater to be analyzed is injected, and the wastewater is supplied to the oil concentration detection unit 12 through the mixing coil 10 and the separation unit 11, and the concentration of the oil contained therein is measured. In this case, the mixing efficiency in the mixing coil 10 is improved, and a predetermined measurement can be performed only by using a small amount of the extraction solvent 3.
【００１０】しかしながら、上記図４および図５に示す
ように構成した油分測定装置においても、以下のような
問題があった。すなわち、図４に示した油分測定装置に
おいては、抽出溶媒系流路１に対して排水の注入を行う
ため、前記図３に示した油分測定装置と同様に、抽出溶
媒３の流れが注入された排水によって断ち切られること
があり、したがって、同様に、混合が均一に行われず、
抽出効率が悪いため、測定精度に悪影響が及ぼされると
いった問題がある。[0010] However, the oil content measuring device constructed as shown in FIGS. 4 and 5 has the following problems. That is, in the oil content measuring device shown in FIG. 4, since the drainage is injected into the extraction solvent system flow path 1, the flow of the extraction solvent 3 is injected similarly to the oil content measuring device shown in FIG. May be cut off by wastewater that has drained, and therefore, likewise, mixing may not be uniform,
There is a problem that the measurement accuracy is adversely affected due to poor extraction efficiency.
【００１１】また、図５に示した油分測定装置において
は、水系流路２に対して排水の注入を行うため、上記図
４に示した油分測定装置のような排水の注入に関する問
題はないが、水系流路２に対してＯＣＢ標準物質の注入
を行うため、このＯＣＢ標準物質の微量が水系流路２の
内壁に付着し、これがメモリーとしてピークに対してテ
ーリングとして尾をひくことになり、シャープなピーク
つまり高感度な分析を短時間で行えないといった問題が
ある。Further, in the oil content measuring device shown in FIG. 5, since the drainage is injected into the water system flow path 2, there is no problem regarding the injection of the wastewater as in the oil content measuring device shown in FIG. In order to inject the OCB standard into the aqueous flow path 2, a small amount of the OCB standard adheres to the inner wall of the aqueous flow path 2, and this tails the tail as a memory against the peak, There is a problem that a sharp peak, that is, high-sensitivity analysis cannot be performed in a short time.
【００１２】この発明は、上述の事柄に留意してなされ
たもので、その目的は、排水など試料に含まれる油分を
高精度に安定して測定することができる油分測定装置を
提供することである。The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide an oil content measuring device capable of measuring oil content contained in a sample such as waste water with high accuracy and stability. is there.
【００１３】[0013]
【課題を解決するための手段】上記目的を達成するた
め、この発明では、抽出溶媒が流れる抽出溶媒系流路と
水が流れる水系流路とを並列的に設け、これら両流路の
合流点より下流側に両流路を流れる液体を混合する混合
部を設け、この混合部の下流側に混合部からの混合液を
油分を溶解させた溶媒と水とに分離する分離部を設け、
さらに、この分離部の下流側に油分を溶解させた溶媒が
サンプルとして供給され、前記油分の濃度を測定する油
分濃度検出部を設けた油分測定装置において、前記抽出
溶媒系流路に標準試料を注入する標準試料注入部を設
け、水系流路に測定試料を注入する測定試料注入部を設
けている。In order to achieve the above object, according to the present invention, an extraction solvent flow path through which an extraction solvent flows and a water flow path through which water flows are provided in parallel, Providing a mixing section that mixes the liquids flowing through both flow paths on the more downstream side, and providing a separation section on the downstream side of the mixing section for separating the mixed liquid from the mixing section into a solvent in which oil is dissolved and water.
Further, a solvent in which oil is dissolved is supplied as a sample downstream of the separation unit, and in an oil measurement device provided with an oil concentration detection unit for measuring the oil concentration, a standard sample is passed through the extraction solvent system flow path. A standard sample injecting section for injecting is provided, and a measurement sample injecting section for injecting the measurement sample into the aqueous channel is provided.
【００１４】上記構成の油分測定装置においては、抽出
溶媒系流路に対して標準試料の注入を行う一方、水系流
路に対して排水など測定試料の注入を行うので、それぞ
れの流路における液体の流れは変わらない。そして、標
準試料および測定試料がそれぞれ抽出溶媒に対して一定
量混合されるため、抽出が安定に行われ、抽出の一定化
が図られるので、測定精度が向上する。In the oil content measuring device having the above structure, while the standard sample is injected into the extraction solvent flow channel, the measurement sample such as waste water is injected into the aqueous flow channel. Flow does not change. Since the standard sample and the measurement sample are each mixed in a fixed amount with the extraction solvent, the extraction is performed stably and the extraction is made constant, so that the measurement accuracy is improved.
【００１５】[0015]
【発明の実施の形態】以下、この発明の詳細について図
を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings.
【００１６】図１は、この発明の油分測定装置の一例を
概略的に示す図で、この図において、図４および図５に
示した符号と同一の符号は同一物であるので、その説明
は省略する。FIG. 1 is a diagram schematically showing an example of an oil content measuring device according to the present invention. In this figure, the same reference numerals as those shown in FIGS. Omitted.
【００１７】図１において、１５は抽出溶媒としての四
塩化炭素が流れる抽出溶媒系流路１の吸引ポンプ５と合
流点９との間に介装される注入用バルブ１６とこれに接
続されるシリンジなどの注入器１７とからなる注入部で
ある。この注入部１５は、予め四塩化炭素で適宜に希釈
されたＯＣＢ標準物質など標準試料ＳＴＤを抽出溶媒系
流路１に注入するものである。また、１８は水が流れる
水系流路２の吸引ポンプ８と合流点９との間に介装され
る注入用バルブ１９とこれに接続されるシリンジなどの
注入器２０とからなる注入部である。この注入部１８は
排水などの測定試料ａを水系流路２に注入するものであ
る。In FIG. 1, reference numeral 15 denotes an injection valve 16 interposed between the suction pump 5 and the junction 9 of the extraction solvent system flow path 1 through which carbon tetrachloride as an extraction solvent flows, and is connected thereto. This is an injection section including an injector 17 such as a syringe. The injection section 15 is for injecting a standard sample STD such as an OCB standard substance appropriately diluted in advance with carbon tetrachloride into the extraction solvent system flow path 1. Reference numeral 18 denotes an injection section including an injection valve 19 interposed between the suction pump 8 and the junction 9 of the water flow path 2 through which water flows, and an injector 20 such as a syringe connected thereto. . The injection section 18 is for injecting a measurement sample a such as drainage into the water-based flow path 2.
【００１８】そして、この実施例においては、ミキシン
グコイル１０および分離部１１は、上述した従来の油分
測定装置で用いるものと変わるところはないが、油分濃
度検出部１２におけるフローセル４０（図６参照）は、
その本体４１が金属以外の材料、例えばガラスよりなる
とともに、セル窓４２ａ，４２ｂが石英で形成されてい
る。In this embodiment, the mixing coil 10 and the separation unit 11 are the same as those used in the above-mentioned conventional oil content measuring device, but the flow cell 40 in the oil concentration detection unit 12 (see FIG. 6). Is
The main body 41 is made of a material other than metal, for example, glass, and the cell windows 42a and 42b are made of quartz.
【００１９】次に、上記構成の油分測定装置によって排
水中の油分を測定する手順の一例を、図２をも参照しな
がら説明する。Next, an example of a procedure for measuring the oil content in the waste water by the oil content measuring device having the above configuration will be described with reference to FIG.
【００２０】測定に際しては、抽出溶媒系流路１および
水系流路２の吸引ポンプ５，８を動作させ（図２（Ａ）
参照）、抽出溶媒系流路１に四塩化炭素３が流れ（図２
（Ｂ）参照）、水系流路２に水６が流れる（図２（Ｄ）
参照）ようにする。この場合、抽出溶媒系流路１、水系
流路２の送液速度をそれぞれ、例えば１ｃｍ3 ／ｍｉ
ｎ、５ｃｍ3 ／ｍｉｎとなるようにする。At the time of measurement, the suction pumps 5, 8 of the extraction solvent system flow path 1 and the aqueous system flow path 2 are operated (FIG. 2A).
2), and carbon tetrachloride 3 flows through the extraction solvent system flow path 1 (FIG. 2).
(See FIG. 2 (B)), and water 6 flows through the aqueous flow path 2 (FIG. 2 (D)).
See). In this case, the liquid sending speeds of the extraction solvent-based flow path 1 and the water-based flow path 2 are each set to, for example, 1 cm 3 / mi.
n, 5 cm 3 / min.
【００２１】（１）まず、注入器１７を介して一定量の
標準試料ＳＴＤを、四塩化炭素３が流れている抽出溶媒
系流路１の中に例えば３回に分けて注入する（図２
（Ｃ）中の符号ＳＴＤ1 〜ＳＴＤ3 ）。このとき、水系
流路２には水６が流れているだけである（図２（Ｄ）中
の符号６）。(1) First, a predetermined amount of the standard sample STD is injected into the extraction solvent system flow path 1 through which the carbon tetrachloride 3 flows, for example, in three times via the injector 17 (FIG. 2).
Symbols STD 1 to STD 3 in (C)). At this time, only the water 6 flows in the water flow path 2 (reference numeral 6 in FIG. 2D).
【００２２】（２）前記一定量の標準試料ＳＴＤを含む
四塩化炭素３の流れは、合流点９において水系流路２を
流れている水６と合流し、さらに、標準試料ＳＴＤは、
ミキシングコイル１０において水６と混じり合う（図２
（Ｆ）中の符号ｆ1 ）。(2) The flow of the carbon tetrachloride 3 containing the fixed amount of the standard sample STD merges with the water 6 flowing in the aqueous flow path 2 at the junction 9, and the standard sample STD
Mixing with water 6 in mixing coil 10 (FIG. 2)
Symbol f 1 in (F)).
【００２３】（３）前記標準試料ＳＴＤに含まれる油分
は四塩化炭素３に抽出され、分離部１１において油分を
含む四塩化炭素（図２（Ｇ）中の符号ｇ1 ）と水（図２
（Ｈ）参照）とに分離され、水は適宜廃棄される。(3) The oil contained in the standard sample STD is extracted into carbon tetrachloride 3, and the carbon tetrachloride containing oil (g 1 in FIG. 2 (G)) and water (FIG.
(See (H)) and water is discarded as appropriate.
【００２４】（４）前記油分を含む四塩化炭素ｇ1 は、
油分濃度検出部１２に供給され、図２（Ｉ）において符
号ｉ1 で示すような出力が得られる。この出力と標準試
料ＳＴＤの濃度とに基づいて検量線を得る。(4) The carbon tetrachloride g 1 containing the oil component is
It is supplied to the oil content detection unit 12, an output as indicated at i 1 is obtained in FIG. 2 (I). A calibration curve is obtained based on this output and the concentration of the standard sample STD.
【００２５】（５）次に、注入器２０を介して、例えば
一定量の測定試料である４種類の排水ａ1 〜ａ4 を、水
６が流れている水系流路２の中に順次注入する（図２
（Ｅ）参照）。このとき、抽出溶媒系流路１には四塩化
炭素３が流れているだけである（図２（Ｂ）中の符号
３）。(5) Next, for example, four types of drainage a 1 to a 4 , which are, for example, a predetermined amount of a measurement sample, are sequentially injected into the water flow path 2 through which the water 6 flows through the injector 20. (Figure 2
(E)). At this time, only carbon tetrachloride 3 is flowing in the extraction solvent system flow path 1 (reference numeral 3 in FIG. 2B).
【００２６】（６）前記一定量の排水ａを含む水６の流
れは、合流点９において抽出溶媒系流路１を流れている
四塩化炭素３と合流し、さらに、排水ａは、ミキシング
コイル１０において四塩化炭素３と混じり合う（図２
（Ｆ）中の符号ｆ2 ）。(6) The flow of the water 6 containing the fixed amount of the waste water a merges with the carbon tetrachloride 3 flowing in the extraction solvent system flow path 1 at the junction 9. 10 mixed with carbon tetrachloride 3 (FIG. 2
Code f 2 in (F)).
【００２７】（７）前記排水ａに含まれる懸濁または溶
解している油分は、四塩化炭素３に抽出され、分離部１
１において油分を含む四塩化炭素（図２（Ｇ）中の符号
ｇ2）と水（図２（Ｈ）参照）とに分離され、水は適宜
廃棄される。(7) The suspended or dissolved oil contained in the waste water a is extracted into carbon tetrachloride 3 and
In FIG. 1, carbon tetrachloride containing oil (symbol g 2 in FIG. 2 (G)) and water (see FIG. 2 (H)) are separated, and the water is appropriately discarded.
【００２８】（８）前記油分を含む四塩化炭素ｇ2 は、
油分濃度検出部１２に供給され、図２（Ｉ）において符
号ｉ2 で示すような出力が得られる。この出力ｉ2 を、
前記（４）において求めた検量線を用いることにより、
油分濃度が得られる。(8) The carbon tetrachloride g 2 containing the oil component is
It is supplied to the oil content detection unit 12, an output as shown by reference numeral i 2 is obtained in FIG. 2 (I). This output i 2 is
By using the calibration curve obtained in the above (4),
An oil concentration is obtained.
【００２９】上記実施例においては、抽出溶媒系流路１
に対して標準試料ＳＴＤの注入を行う一方、水系流路２
に対して排水ａの注入を行うので、それぞれの流路１，
２における液体の流れは変わらない。そして、標準試料
ＳＴＤおよび排水ａがそれぞれ四塩化炭素３に対して一
定量混合されるため、抽出が安定に行われ、抽出の一定
化が図られるので、測定精度が向上する。In the above embodiment, the extraction solvent system flow path 1
While the standard sample STD is injected into the aqueous channel 2
Of the drainage a to the respective flow paths 1 and
The liquid flow in 2 does not change. Then, since the standard sample STD and the wastewater a are mixed in a fixed amount with respect to the carbon tetrachloride 3, respectively, the extraction is stably performed, and the extraction is stabilized, so that the measurement accuracy is improved.
【００３０】そして、水系流路２に対して四塩化炭素な
ど抽出溶媒で希釈された標準試料ＳＴＤを注入したり、
逆に、抽出溶媒系流路１に排水ａを注入すると、テーリ
ングが生じるが、上記実施例においては、このようなこ
とがなく、シャープなピークつまり高感度な分析を短時
間で行えことができる。Then, a standard sample STD diluted with an extraction solvent such as carbon tetrachloride is injected into the aqueous flow path 2,
Conversely, when the drainage a is injected into the extraction solvent system flow path 1, tailing occurs. In the above embodiment, such a phenomenon does not occur, and a sharp peak, that is, highly sensitive analysis can be performed in a short time. .
【００３１】ところで、この実施例のように、抽出溶媒
として四塩化炭素を用いた場合、四塩化炭素が排水中の
水と反応して塩化水素を発生し、油分濃度検出部１２の
フローセル４０のセル本体４１が金属製であると、長期
間の使用により、セル本体４１内部の反射面が腐食さ
れ、赤外光の透過率が低下するといった不都合がある
が、この実施例では、フローセル本体４１を石英で形成
しているため、このようなことがなく、長期にわたって
安定して測定を行うことができる。なお、フローセル４
０全体を石英で形成してもよく、このようにした場合、
本体４１とセル窓４２ａ，４２ｂとの接着の問題がなく
なる。When carbon tetrachloride is used as the extraction solvent as in this embodiment, the carbon tetrachloride reacts with the water in the waste water to generate hydrogen chloride. If the cell body 41 is made of metal, there is an inconvenience that the reflection surface inside the cell body 41 is corroded and the transmittance of infrared light is reduced due to long-term use. However, in this embodiment, the flow cell body 41 is used. Is formed of quartz, so that the measurement can be stably performed over a long period without such a problem. The flow cell 4
0 may be entirely formed of quartz, and in this case,
The problem of adhesion between the main body 41 and the cell windows 42a, 42b is eliminated.
【００３２】また、排水ａが注入される抽出溶媒系流路
１における送液速度に比べて、水系流路２の送液速度を
大きく（上記実施例の場合５倍）しているので、溶媒抽
出によって、濃縮（上記実施例の場合５倍）することが
でき、それだけ、検出感度が上がる。Further, since the liquid sending speed in the aqueous flow path 2 is higher than that in the extraction solvent flow path 1 into which the waste water a is injected (5 times in the above embodiment), By extraction, concentration (5 times in the case of the above example) can be performed, and the detection sensitivity is increased accordingly.
【００３３】この発明は、上述の実施例に限られるもの
ではなく、例えば、抽出溶媒としては、上記四塩化炭素
のほかに、テトラクロロヘキサフルオロブタンや、フロ
ロカーボン（ＣＦＣ）−１１３、ＣＦＣ−１１５などの
非炭化水素系の有機溶媒などを用いてもよい。The present invention is not limited to the above-mentioned embodiment. For example, in addition to the above-mentioned carbon tetrachloride, tetrachlorohexafluorobutane, fluorocarbon (CFC) -113, CFC-115 may be used as the extraction solvent. Or a non-hydrocarbon organic solvent.
【００３４】そして、油分濃度検出部１２は、上記赤外
分光光度計のほか、赤外吸収を検出する装置であっても
よい。また、これらの装置は、分散、非分散のいずれの
方式であってもよい。The oil concentration detector 12 may be a device that detects infrared absorption in addition to the infrared spectrophotometer. In addition, these devices may be any of a distributed system and a non-dispersed system.
【００３５】[0035]
【発明の効果】この発明は、以上のような形態で実施さ
れ、以下のような効果を奏する。The present invention is embodied in the above-described embodiment and has the following effects.
【００３６】この発明の油分測定装置においては、抽出
溶媒系流路に対して標準試料の注入を行う一方、水系流
路に対して測定試料の注入を行うことができるので、抽
出が安定に行われ、抽出の一定化が図られるので、測定
精度が向上する。したがって、排水など試料に含まれる
油分を高精度に安定して測定することができる。In the oil content measuring device of the present invention, while the standard sample is injected into the extraction solvent flow channel, the measurement sample can be injected into the aqueous flow channel, so that the extraction can be performed stably. Since the extraction is made constant, the measurement accuracy is improved. Therefore, it is possible to stably measure oil contained in a sample such as drainage with high accuracy.
【図１】この発明の油分測定装置の一例を概略的に示す
図である。FIG. 1 is a diagram schematically showing an example of an oil content measuring device of the present invention.
【図２】前記装置による油分測定を説明するための図で
ある。FIG. 2 is a diagram for explaining oil content measurement by the device.
【図３】従来の油分測定装置を概略的に示す図である。FIG. 3 is a diagram schematically showing a conventional oil content measuring device.
【図４】従来の油分測定装置を概略的に示す図である。FIG. 4 is a diagram schematically showing a conventional oil content measuring device.
【図５】従来の油分測定装置を概略的に示す図である。FIG. 5 is a diagram schematically showing a conventional oil content measuring device.
【図６】油分濃度検出部の構成を示す図である。FIG. 6 is a diagram illustrating a configuration of an oil concentration detection unit.
１…抽出溶媒系流路、２…水系流路、３…抽出溶媒、６
…水、９…合流点、１０…混合部、１１…分離部、１２
…油分濃度検出部、１５…標準試料注入部、１８…測定
試料注入部、Ｓ…サンプル、ＳＴＤ…標準試料、ａ…測
定試料。DESCRIPTION OF SYMBOLS 1 ... Extraction solvent flow path, 2 ... Water flow path, 3 ... Extraction solvent, 6
... water, 9 ... confluence point, 10 ... mixing section, 11 ... separation section, 12
... oil concentration detector, 15 ... standard sample injection part, 18 ... measurement sample injection part, S ... sample, STD ... standard sample, a ... measurement sample.
Claims (1)
流れる水系流路とを並列的に設け、これら両流路の合流
点より下流側に両流路を流れる液体を混合する混合部を
設け、この混合部の下流側に混合部からの混合液を油分
を溶解させた溶媒と水とに分離する分離部を設け、さら
に、この分離部の下流側に油分を溶解させた溶媒がサン
プルとして供給され、前記油分の濃度を測定する油分濃
度検出部を設けた油分測定装置において、前記抽出溶媒
系流路に標準試料を注入する標準試料注入部を設け、水
系流路に測定試料を注入する測定試料注入部を設けたこ
とを特徴とする油分測定装置。1. A mixing section for providing an extraction solvent-based flow path through which an extraction solvent flows and an aqueous flow path through which water flows in parallel, and mixing a liquid flowing through both flow paths downstream of a junction of the two flow paths. A separation section is provided downstream of the mixing section to separate the mixed liquid from the mixing section into a solvent in which the oil is dissolved and water, and the solvent in which the oil is dissolved is provided downstream of the separation section. Supplied as a sample, in the oil content measurement device provided with an oil concentration detection unit for measuring the oil concentration, provided a standard sample injection unit for injecting a standard sample into the extraction solvent system flow path, the measurement sample in the aqueous flow path An oil content measuring device comprising a measurement sample injection part for injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31877296A JPH10142234A (en) | 1996-11-13 | 1996-11-13 | Oil content measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31877296A JPH10142234A (en) | 1996-11-13 | 1996-11-13 | Oil content measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10142234A true JPH10142234A (en) | 1998-05-29 |
Family
ID=18102782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31877296A Pending JPH10142234A (en) | 1996-11-13 | 1996-11-13 | Oil content measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10142234A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007023889A1 (en) * | 2005-08-26 | 2009-02-26 | キヤノンセミコンダクターエクィップメント株式会社 | Flow analysis system |
| CN105181922A (en) * | 2015-09-18 | 2015-12-23 | 上海昂林科学仪器有限公司 | Device for measuring animal and plant oil |
| CN105866059A (en) * | 2015-02-11 | 2016-08-17 | 斯派超科学股份有限公司 | Method of measuring water contamination in turbine and other industrial oils |
| CN109444367A (en) * | 2018-12-06 | 2019-03-08 | 宁波然诺科学仪器有限公司 | The flow path system of petroleum, animals and plants oil content in a kind of all automatic measurement water |
-
1996
- 1996-11-13 JP JP31877296A patent/JPH10142234A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007023889A1 (en) * | 2005-08-26 | 2009-02-26 | キヤノンセミコンダクターエクィップメント株式会社 | Flow analysis system |
| CN105866059A (en) * | 2015-02-11 | 2016-08-17 | 斯派超科学股份有限公司 | Method of measuring water contamination in turbine and other industrial oils |
| CN105181922A (en) * | 2015-09-18 | 2015-12-23 | 上海昂林科学仪器有限公司 | Device for measuring animal and plant oil |
| CN109444367A (en) * | 2018-12-06 | 2019-03-08 | 宁波然诺科学仪器有限公司 | The flow path system of petroleum, animals and plants oil content in a kind of all automatic measurement water |
| CN109444367B (en) * | 2018-12-06 | 2023-08-08 | 宁波然诺科学仪器有限公司 | Flow path system for fully automatically measuring oil content, animal and vegetable oil content in water |
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