JPH1183844A - Collecting method for soil pore water and investigation method for soil contamination - Google Patents
Collecting method for soil pore water and investigation method for soil contaminationInfo
- Publication number
- JPH1183844A JPH1183844A JP24699697A JP24699697A JPH1183844A JP H1183844 A JPH1183844 A JP H1183844A JP 24699697 A JP24699697 A JP 24699697A JP 24699697 A JP24699697 A JP 24699697A JP H1183844 A JPH1183844 A JP H1183844A
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- Prior art keywords
- soil
- sampler
- hole
- slurry
- contamination
- 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.)
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- Sampling And Sample Adjustment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は土壌間隙水の採取方
法及び土壌汚染の調査方法に関するものであり、詳しく
は地下水面よりも浅い土壌から土壌間隙水を採取する方
法と土壌汚染を調査して汚染状況分布図を作成する方法
とに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for collecting soil pore water and a method for investigating soil contamination. More specifically, the present invention relates to a method for collecting soil pore water from soil shallower than a groundwater table and a survey on soil contamination. And a method of creating a pollution status distribution map.
【０００２】[0002]
【従来の技術】地下水面よりも浅い土壌の汚染を調査す
る方法としては、土壌を採取して分析する方法（平成３
年８月環境庁告示４６号）のほか、土壌中のガスを採取
して分析する方法が行われている。後者の土壌ガスサン
プリングの方法としては、真空ポンプ等を用いてガスを
強制的に収集する方法や、活性炭を備えたコレクタを埋
設・放置しガスを採取するフィンガープリント法のよう
な方法などがある。2. Description of the Related Art As a method of investigating contamination of soil shallower than a groundwater table, a method of collecting and analyzing soil (Heisei 3)
In addition to the method of collecting and analyzing gas in the soil, there is a method of collecting and analyzing gas in the soil. As the latter method of soil gas sampling, there is a method of forcibly collecting gas using a vacuum pump or the like, a fingerprint method of burying and leaving a collector equipped with activated carbon and collecting gas, and the like. .
【０００３】[0003]
【発明が解決しようとする課題】 土壌を採取して分析する方法にあっては、大がかり
なボーリングを実施しなければならずコストが嵩む。ま
た、土壌に吸着し安定状態となっている物質も汚染物質
として検出されるところから、地下水汚染の可能性（地
下水汚染ポテンシャル）が過大評価される。In the method of collecting and analyzing soil, a large-scale boring must be performed, which increases the cost. In addition, since substances that are adsorbed on the soil and are in a stable state are also detected as pollutants, the possibility of groundwater contamination (groundwater contamination potential) is overestimated.
【０００４】 土壌ガスを採取して分析する方法は、
汚染分布範囲を知るためのスクリーニングに適した方法
ではあるが、気化しないあるいは気化しにくい汚染物質
（例えば重金属）の汚染は検出できない。また、ガスの
分布状況は実際の汚染範囲とぴったり一致するわけでは
ないため、ガス調査のみでは汚染源を正確に把握するこ
とができないといった問題点がある。[0004] A method for collecting and analyzing soil gas is as follows.
Although this method is suitable for screening to determine the range of contamination distribution, it cannot detect contamination of a contaminant that does not vaporize or hardly vaporizes (for example, heavy metal). In addition, since the distribution state of gas does not exactly match the actual pollution range, there is a problem that the source of pollution cannot be accurately grasped only by gas survey.
【０００５】 なお、井戸等から地下水を採取して分
析する方法の場合、土壌の汚染は把握しにくい。In the case of a method of collecting and analyzing groundwater from a well or the like, it is difficult to grasp soil contamination.
【０００６】 本発明は、土壌間隙水を採取、分析す
ることにより簡便かつ低コストで正確な地下水汚染ポテ
ンシャルの把握、地下水汚染源の把握および土壌汚染分
布を正確に調査できる方法を提供することを目的とす
る。An object of the present invention is to provide a simple and low-cost method of accurately and accurately grasping groundwater pollution potential, grasping groundwater pollution sources, and accurately investigating soil pollution distribution by collecting and analyzing soil pore water. And
【０００７】[0007]
【課題を解決するための手段】本発明の土壌間隙水の採
取方法は、地下水面より浅い深度の孔を地面にあけ、チ
ューブが接続されていると共に少なくとも一部が透水部
となっているサンプラを該孔内に配置した後、該孔を密
閉し、該サンプラ内を減圧して土壌間隙水を該サンプラ
内に流入させ、このサンプラ内に流入した土壌間隙水を
前記チューブを介して採取することを特徴とするもので
ある。According to the method for collecting soil pore water according to the present invention, a hole is formed in the ground at a depth smaller than the groundwater level, and a sampler having a tube connected and at least a part of which is a permeable portion is provided. Is placed in the hole, the hole is closed, the inside of the sampler is depressurized, and the soil pore water flows into the sampler, and the soil pore water flowing into the sampler is collected through the tube. It is characterized by the following.
【０００８】かかる方法は、ボーリングが不要であり、
土壌間隙水のみを効率良く採取することができる。[0008] Such a method does not require boring,
Only soil pore water can be efficiently collected.
【０００９】なお、孔内にサンプラを配置した後に該孔
を密閉するには、孔内にまず粒状固体のスラリーを流し
込んだ後、サンプラの少なくとも前記透水部が該スラリ
ー中に埋設するようにサンプラを該孔内に配置し、その
後該孔内に孔を密閉するためのスラリーを流し込むのが
好ましい。In order to seal the hole after disposing the sampler in the hole, a slurry of a particulate solid is first poured into the hole, and then the sampler is placed so that at least the water-permeable portion of the sampler is embedded in the slurry. Is preferably placed in the hole, and then a slurry for sealing the hole is poured into the hole.
【００１０】本発明の土壌汚染の調査方法は、土壌汚染
の状況を示す分布図を作成する土壌汚染調査の方法にお
いて、地下水面より浅い地中の複数箇所から土壌間隙水
を採取し、採取した土壌間隙水中の土壌汚染物質濃度を
分析した分析値から汚染状況を調査することを特徴とす
るものである。なお、土壌汚染物質濃度の検出値に基づ
いて必要に応じ汚染状況分布図を作成する。[0010] The method for investigating soil contamination according to the present invention is a method for investigating soil contamination in which a distribution map showing the status of soil contamination is created. In this method, soil pore water is collected from a plurality of locations in the ground that are shallower than the groundwater table. The present invention is characterized by investigating the state of contamination from an analysis value obtained by analyzing the concentration of soil pollutants in soil pore water. In addition, a pollution situation distribution map is created as needed based on the detected value of the soil pollutant concentration.
【００１１】このように土壌間隙水中の汚染物質濃度を
測定することにより、地下水汚染ポテンシャルを過大評
価することなく地下水汚染源を把握することができる。By measuring the contaminant concentration in the soil pore water in this way, the groundwater pollution source can be grasped without overestimating the groundwater pollution potential.
【００１２】[0012]
【発明の実施の形態】図１（ａ）は実施の形態に係る土
壌間隙水の採取方法を示す模式的な断面図である。図１
（ｂ）はサンプラの埋設方法の説明図、図１（ｃ）はサ
ンプラの断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a schematic sectional view showing a method for collecting soil pore water according to an embodiment. FIG.
FIG. 1B is an explanatory view of a method of embedding the sampler, and FIG. 1C is a sectional view of the sampler.
【００１３】この方法に用いるサンプラ１は筒状のもの
であり、下部が多孔質セラミックなどの多孔質体にて構
成された透水部２となっている。このサンプラ１内には
短管３と長管４とが差し込まれており、長管４の下端は
サンプラ１内の底面近傍にまで達している。The sampler 1 used in this method has a cylindrical shape, and the lower portion is a water permeable portion 2 made of a porous material such as a porous ceramic. A short tube 3 and a long tube 4 are inserted into the sampler 1, and the lower end of the long tube 4 reaches near the bottom of the sampler 1.
【００１４】短管３と長管４にはそれぞれ耐圧チューブ
５、６が接続されている。チューブ５には弁７が設けら
れている。チューブ６は採取容器８に接続されている。
採取容器８は耐圧チューブ９を介して真空ポンプ１１に
接続されており、耐圧チューブ９には弁１０が設けられ
ている。採取容器８には真空度計１２が設けられてい
る。チューブ５に窒素ガスに代表される不活性ガス供給
手段を接続する場合もある。Pressure-resistant tubes 5 and 6 are connected to the short tube 3 and the long tube 4, respectively. The tube 5 is provided with a valve 7. The tube 6 is connected to a collection container 8.
The sampling container 8 is connected to a vacuum pump 11 via a pressure-resistant tube 9, and the pressure-resistant tube 9 is provided with a valve 10. The collection container 8 is provided with a vacuum gauge 12. In some cases, an inert gas supply means typified by nitrogen gas is connected to the tube 5.
【００１５】このサンプラ１を用いて土壌間隙水を採取
するには、地面Ｇに地下水面よりも浅い孔Ｈを掘る。To collect soil pore water using the sampler 1, a hole H shallower than the groundwater surface is dug in the ground G.
【００１６】この孔Ｈの底部に粒状固体のスラリーＳ1
を流し込み、サンプラ１の下部の透水部２を該スラリー
Ｓ1 中に埋没させる。次に、このスラリーＳ1 の上に孔
を密閉するためのスラリーＳ2 を流し込む。スラリーＳ
1 としてはシリカ粒子のスラリーを用いることができ
る。スラリーＳ2 としてはベントナイトや各種粘土のス
ラリーを用いることができる。At the bottom of the hole H, a granular solid slurry S 1
The pouring, to bury the permeability portion 2 of the lower part of the sampler 1 during the slurry S 1. Then, pour the slurry S 2 for sealing the hole in the top of the slurry S 1. Slurry S
As 1 , a slurry of silica particles can be used. The slurry S 2 can be used a slurry of bentonite and various clays.
【００１７】次に、弁７を閉、弁１０を開として、真空
ポンプ１１を作動させる。これにより、スラリーＳ1 に
含まれる水分がサンプラ１内に吸い出される。スラリー
Ｓ1から水分が吸い出されると、サンプラ１の透水部２
の周囲は固形粒子２０で囲まれる。この固形粒子２０の
層は透水層を構成する。この固形粒子２０の上には、ス
ラリーＳ2 により緻密層２１が形成される。Next, the valve 7 is closed and the valve 10 is opened, and the vacuum pump 11 is operated. Thereby, the water contained in the slurry S 1 is sucked into the sampler 1. When moisture is sucked out of the slurry S 1 , the water permeable portion 2 of the sampler 1
Is surrounded by solid particles 20. The layer of the solid particles 20 constitutes a permeable layer. On this solid particles 20, the dense layer 21 is formed by the slurry S 2.
【００１８】スラリーＳ1 から水分を吸い取った後、弁
７を開放する。そうすると、サンプラ１内の水はチュー
ブ６を介して容器８内に吸い上げられる。サンプラ１内
の水分を十分にこの容器８内に吸い出した後、弁７を開
とし、ポンプ１１を停止し、容器８内の水を捨てる。[0018] After the slurry S 1 blotted, to open the valve 7. Then, the water in the sampler 1 is sucked into the container 8 via the tube 6. After sufficiently sucking the water in the sampler 1 into the container 8, the valve 7 is opened, the pump 11 is stopped, and the water in the container 8 is discarded.
【００１９】しかる後、弁７を閉め、再度ポンプ１１を
作動させ、容器８内及びサンプラ１内を所定の真空度ま
で減圧し、次いで弁１０を閉とし、ポンプ１１を停止す
る。この状態に放置しておくと、サンプラ１の周囲の土
壌中の水分が固形粒子２０よりなる透水層に滲み出し、
サンプラ１内に吸引流入するようになる。真空度計１２
の真空度が初期真空度の半分程度になったならば弁７、
１０を開とすると共にポンプ１１を作動させ、サンプラ
１内の水を容器８内に吸い上げる。ポンプ１１を停止し
た後、容器８内の水を採取して分析する。Thereafter, the valve 7 is closed, the pump 11 is operated again, the pressure in the container 8 and the sampler 1 is reduced to a predetermined degree of vacuum, then the valve 10 is closed, and the pump 11 is stopped. If left in this state, moisture in the soil around the sampler 1 seeps into the permeable layer composed of the solid particles 20,
The liquid flows into the sampler 1 by suction. Vacuum gauge 12
When the degree of vacuum of the vacuum becomes about half of the initial degree of vacuum, valve 7,
When 10 is opened, the pump 11 is operated, and the water in the sampler 1 is sucked into the container 8. After the pump 11 is stopped, water in the container 8 is collected and analyzed.
【００２０】揮発性の高い有機ハロゲン化合物、ベンゼ
ンのような有機化合物が対象となる場合には、サンプラ
１内の水を容器８に真空ポンプを用いて吸い上げると検
水から対象物が揮発してしまうことが考えられるため、
バルブ７を開にし、窒素ガスに代表される不活性ガスを
チューブ５からサンプラ１に供給し、サンプラ１内の水
を容器８に採取し、分析することもある。When an organic compound having a high volatility, such as an organic halogen compound or benzene, is targeted, the water in the sampler 1 is sucked into the container 8 by using a vacuum pump, and the target is volatilized from the test water. It is possible that
In some cases, the valve 7 is opened, an inert gas represented by nitrogen gas is supplied to the sampler 1 from the tube 5, and water in the sampler 1 is collected in the container 8 for analysis.
【００２１】このようにして採取された水は、サンプラ
１の周囲の土壌の間隙に保持されていた水であるため、
この採取水を分析することにより孔Ｈを穿設した地点に
おけるサンプラ１の深度の土壌間隙水成分を正確に分析
でき、土壌間隙水の汚染を正確に調査することができ
る。このように土壌間隙水のみを測定対象とし、土壌に
吸着された物質は測定対象としないため、地下水汚染ポ
テンシャルを過大評価することなく地下水汚染源を把握
することができる。The water collected in this manner is water held in the gap between the soil around the sampler 1,
By analyzing the collected water, the soil pore water component at the depth of the sampler 1 at the point where the hole H is formed can be accurately analyzed, and the contamination of the soil pore water can be accurately investigated. As described above, only the soil pore water is measured, and the substance adsorbed on the soil is not measured. Therefore, the groundwater pollution source can be grasped without overestimating the groundwater pollution potential.
【００２２】地面Ｇの所定の複数地点において所望深度
の孔Ｈを掘って同様に土壌間隙水を採取して分析し、こ
の結果から高精度の汚染マップを作成することができ
る。At a plurality of predetermined points on the ground G, holes H having a desired depth are dug, and soil pore water is similarly collected and analyzed. From this result, a highly accurate pollution map can be created.
【００２３】なお、孔Ｈはハンマードリル等の簡易な機
器を用いることができ、ボーリングの場合に比べ設備及
び作業がきわめて簡易である。It is to be noted that simple equipment such as a hammer drill can be used for the hole H, and the equipment and work are extremely simple as compared with the case of boring.
【００２４】孔Ｈを掘るピッチは、想定される汚染エリ
アの大きさに応じ数ｍ〜数十ｍピッチとする。深さ方向
の汚染分布を知りたいときには、数種類の深度の孔を測
定地点に近接して設ければ良い。The pitch at which the holes H are dug is set to several m to several tens m depending on the size of the assumed contaminated area. When it is desired to know the distribution of contamination in the depth direction, holes at several depths may be provided close to the measurement point.
【００２５】スラリーＳ1 の流し込み量は、通常は孔底
から２０ｃｍ程度で足りる。スラリーＳ2 の流し込み量
は１０ｃｍ程度で十分である。The amount of the slurry S 1 to be poured is usually about 20 cm from the bottom of the hole. The amount of pouring of the slurry S 2 is sufficient at about 10cm.
【００２６】[0026]
【実施例】以下、土壌汚染マップ作成の実施例及び比較
例について説明する。EXAMPLES Examples of preparing a soil contamination map and comparative examples will be described below.
【００２７】実施例１ トリクロロエチレンで汚染された１２０ｍ×１２０ｍの
エリアの汚染を図１のサンプラ１を用いて土壌間隙水を
採取及び分析して調査した。Example 1 The contamination of a 120 m × 120 m area contaminated with trichlorethylene was investigated by collecting and analyzing soil pore water using the sampler 1 of FIG.
【００２８】孔Ｈの配置は３０ｍピッチの枡目の交点位
置とし、合計２５個（５×５＝２５）の孔をあけた。地
下水位は予備調査の結果地表面から３．５ｍであること
が分かっており、各孔の深さは２ｍとした。孔の径は約
１０ｃｍとした。The arrangement of the holes H was set at the intersection of meshes with a pitch of 30 m, and a total of 25 holes (5 × 5 = 25) were formed. As a result of preliminary investigation, the groundwater level was found to be 3.5 m from the ground surface, and the depth of each hole was set to 2 m. The diameter of the hole was about 10 cm.
【００２９】サンプラ１は直径５ｃｍ長さ５０ｃｍの円
筒状のものであり、下端から約１２ｃｍの範囲にわたっ
て多孔質セラミックよりなる透水部が形成されている。The sampler 1 has a cylindrical shape with a diameter of 5 cm and a length of 50 cm, and a water-permeable portion made of porous ceramic is formed over a range of about 12 cm from the lower end.
【００３０】平均粒径０．０７４ｍｍのシリカ粒子のス
ラリーＳ1 を孔底から２２ｃｍの深さまで注ぎ込み、こ
のスラリーにサンプラの下部約１７ｃｍを埋没させた。
次いで、ベントナイトのスラリーＳ2 をスラリーＳ1 の
上に約１０センチ深く注ぎ込んだ。The poured slurry S 1 of the silica particles having an average particle size of 0.074mm from the hole bottom to a depth of 22 cm, it was buried lower approximately 17cm sampler to the slurry.
Then, poured slurry S 2 of bentonite deep about 10 cm above the slurry S 1.
【００３１】このサンプラ内を吸引し、スラリーＳ1 中
の水分を吸引し、この吸引した水をポンプで容器８に吸
い上げ、廃棄した。その後、サンプラ内を−２０ｃｍＨ
ｇにまで減圧し、この状態に約４時間放置した。[0031] was aspirated in this sampler, the water in the slurry S 1 by suction, sucked into the container 8 to the suction water pump and discarded. Then, -20cmH inside the sampler
g, and left in this state for about 4 hours.
【００３２】その結果、サンプラ内の負圧が−１０ｃｍ
Ｈｇまで減少してきた。そこで、窒素ガスを供給し、こ
のサンプラ内の水を容器８に採取した。ヘッドスペース
ガスクロマトグラフ質量分析法によってトリクロロエチ
レンを分析した。各地点の分析値をもとにして描いた土
壌汚染分布図を図２（ａ）に示す。なお、図２（ａ）中
の数値の単位は間隙水１Ｌ中に含まれるトリクロロエチ
レンの量（ｍｇ）である。As a result, the negative pressure in the sampler was -10 cm.
Hg. Then, nitrogen gas was supplied, and water in the sampler was collected in the container 8. Trichlorethylene was analyzed by headspace gas chromatography mass spectrometry. FIG. 2A shows a soil contamination distribution map drawn based on the analysis values at each point. The unit of the numerical value in FIG. 2A is the amount (mg) of trichlorethylene contained in 1 L of pore water.
【００３３】比較例１ 実施例１と同一のエリアにおいて、各孔Ｈの直近位置に
ボーリングして土壌を採取し、深度２ｍの地点でのトリ
クロロエチレンを分析した。この分析結果に基づいて描
いた土壌汚染分布図を図２（ｂ）に示す。Comparative Example 1 In the same area as in Example 1, soil was collected by boring at a position immediately adjacent to each hole H, and trichlorethylene at a depth of 2 m was analyzed. FIG. 2B shows a soil contamination distribution map drawn based on the analysis results.
【００３４】なお、図２（ｂ）中の数値の単位は土壌か
ら汚染物質を溶出させて作成した検液１Ｌ中に含まれる
トリクロロエチレンの量（ｍｇ）である。The unit of the numerical value in FIG. 2 (b) is the amount (mg) of trichloroethylene contained in 1 L of a test solution prepared by eluting contaminants from soil.
【００３５】図２（ｂ）はボーリング採取した土壌の分
析値であるから、このトリクロロエチレンの分析値はほ
ぼ真値であると考えられる。図２（ａ）の分布図はこの
図２（ｂ）の分布図とほぼ合致しており、本発明方法に
よって作成した土壌汚染分布図の信頼性がきわめて高い
ことが認められた。FIG. 2 (b) shows the analysis value of the soil sampled by boring, so that the analysis value of trichlorethylene is considered to be almost a true value. The distribution map in FIG. 2A almost coincides with the distribution map in FIG. 2B, and it was confirmed that the reliability of the soil contamination distribution map prepared by the method of the present invention was extremely high.
【００３６】比較例２ 実施例１の各孔Ｈの直近位置において、深度２ｍの孔を
あけ、活性炭付きサンプラを２週間埋設するフィンガー
プリント法により、ガスを採取して分析した。Comparative Example 2 A gas was sampled and analyzed by a fingerprint method in which a hole having a depth of 2 m was made in the immediate vicinity of each hole H in Example 1 and a sampler with activated carbon was buried for two weeks.
【００３７】この分析値は土壌、地下水や検液の一定量
当たりのガス吸着量が分からないからトリクロロエチレ
ンの土壌中の含有率（濃度）を求められず、土壌汚染程
度を定量することはできない。ただし、各地点の採取ガ
ス中のトリクロロエチレン濃度の相対的な比較は可能で
あるので、この比較を図２（ｃ）に示した。図２（ｃ）
では各地点で活性炭に吸着させたガスを熱脱着式ガスク
ロマトグラフ質量分析計で分析したときのイオンカウン
タのカウント値を示したものである。この図２（ｃ）を
図２（ａ）、（ｂ）と対比すると、図２（ｃ）の分布は
図２（ａ）、（ｂ）の分布からかなり乖離したものであ
ることが分かる。Since the amount of gas adsorbed in a certain amount of soil, groundwater or test solution cannot be determined from this analytical value, the content (concentration) of trichlorethylene in soil cannot be determined, and the degree of soil contamination cannot be determined. However, since a relative comparison of the trichlorethylene concentration in the collected gas at each point is possible, this comparison is shown in FIG. 2 (c). FIG. 2 (c)
FIG. 3 shows the count value of the ion counter when the gas adsorbed on the activated carbon at each point was analyzed by a thermal desorption gas chromatograph mass spectrometer. When comparing FIG. 2 (c) with FIGS. 2 (a) and 2 (b), it can be seen that the distribution of FIG. 2 (c) deviates considerably from the distributions of FIGS. 2 (a) and 2 (b).
【００３８】[0038]
【発明の効果】本発明方法においては、簡易な機器で地
表面に開孔できる。そして、サンプラ設置のための特別
な機器を必要としないため、土壌採取ボーリングを比較
して低コストで土壌汚染調査の実施が可能である。ま
た、本発明では、地下水汚染を引き起こす汚染水である
土壌間隙水を直接採取するため、土壌サンプリングのよ
うに地下水汚染ポテンシャルを過大評価することがな
く、地下水汚染源を正確に把握することができる。According to the method of the present invention, a hole can be formed in the ground surface with a simple device. In addition, since no special equipment is required for installing the sampler, it is possible to conduct a soil contamination survey at a lower cost compared to soil sampling boring. Further, in the present invention, since soil pore water, which is contaminated water causing groundwater contamination, is directly collected, the groundwater contamination source can be accurately grasped without overestimating the groundwater contamination potential unlike soil sampling.
【図１】本発明方法の説明図である。FIG. 1 is an explanatory diagram of the method of the present invention.
【図２】実施例方法及び従来方法による土壌汚染分布図
である。FIG. 2 is a plot of soil contamination distribution according to an embodiment method and a conventional method.
１ サンプラ ２ 透水部 ５，６，９ 耐圧チューブ ８ 容器 １１ 真空ポンプ １２ 真空度計 DESCRIPTION OF SYMBOLS 1 Sampler 2 Water-permeable part 5, 6, 9 Pressure-resistant tube 8 Vessel 11 Vacuum pump 12 Vacuum gauge
Claims (4)
け、 チューブが接続されていると共に少なくとも一部が透水
部となっているサンプラを該孔内に配置した後、該孔を
密閉し、 該サンプラ内を減圧して土壌間隙水を該サンプラ内に流
入させ、 このサンプラ内に流入した土壌間隙水を前記チューブを
介して採取することを特徴とする土壌間隙水の採取方
法。1. A hole having a depth shallower than the groundwater surface is drilled in the ground, and a sampler connected to a tube and having at least a part of a water-permeable portion is placed in the hole, and the hole is sealed. A method for collecting soil pore water, wherein the pressure in the sampler is reduced to allow soil pore water to flow into the sampler, and the soil pore water flowing into the sampler is collected through the tube.
固体のスラリーを流し込んだ後、サンプラの少なくとも
前記透水部が該スラリー中に埋設するようにサンプラを
該孔内に配置し、その後該孔内に孔を密閉するためのス
ラリーを流し込むことを特徴とする土壌間隙水の採取方
法。2. The method according to claim 1, wherein after the slurry of the particulate solid is poured into the hole, the sampler is disposed in the hole such that at least the water-permeable portion of the sampler is embedded in the slurry. A method for collecting soil pore water, wherein a slurry for sealing a hole is poured into the hole.
土壌汚染調査の方法において、地下水面より浅い地中の
複数箇所から土壌間隙水を採取し、 採取した土壌間隙水中の土壌汚染物質濃度を分析した分
析値から汚染状況を調査することを特徴とする土壌汚染
の調査方法。3. A soil contamination survey method for creating a distribution map showing the status of soil contamination, wherein soil pore water is collected from a plurality of locations in the ground which are shallower than the groundwater table, and the soil pollutant concentration in the collected soil pore water is determined. A method for investigating soil contamination, characterized by investigating the state of contamination from analytical values obtained by analyzing the soil.
請求項１又は２の方法によって行うことを特徴とする土
壌汚染の調査方法。4. A method for investigating soil contamination according to claim 3, wherein the soil pore water is collected by the method according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24699697A JP3304842B2 (en) | 1997-09-11 | 1997-09-11 | Soil pore water sampling method and soil contamination survey method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24699697A JP3304842B2 (en) | 1997-09-11 | 1997-09-11 | Soil pore water sampling method and soil contamination survey method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1183844A true JPH1183844A (en) | 1999-03-26 |
| JP3304842B2 JP3304842B2 (en) | 2002-07-22 |
Family
ID=17156831
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24699697A Expired - Fee Related JP3304842B2 (en) | 1997-09-11 | 1997-09-11 | Soil pore water sampling method and soil contamination survey method |
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| Country | Link |
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