Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 443 The corpse under the bridge
When Lu Chuan and others arrived at the Lion Rock Bridge, the sky was already dark and the sun was about to set.

Qin Yong is making work arrangements.

"Comrades, we got clues this morning that Wang Mingshan, who disappeared five years ago, may have been killed, and his body may be buried under the Lion Rock Bridge."

Ok?
"Pharaoh?"

"Is Mingshan here?"

Wang Mingshan was a member of the second action team back then. Everyone in the team knew Wang Mingshan except for those who had joined the team in the past two years.

This is also the reason why Qin Yong transferred the second group.

Lu Chuan and Zhang Hui looked at each other. This clue should be the one Ren Qiang got.

"Everyone, be quiet. We just got such a clue, but the source of the clue has not yet been found out."

"It is not yet certain whether Wang Mingshan's murdered body was buried under the Lion Rock Bridge. Our task tonight is to investigate under the Lion Rock Bridge and try to find clues."

"Captain Qin, it's already dark, and it will be dark soon. If we check at this time, will we miss something? If not, we can check again tomorrow morning. When it gets brighter, we can check more carefully."

"No."

Qin Yong shook his head: "There are some things you don't know. Time is very tight. We must investigate clearly tonight. Okay, let's start working now!"

Since Qin Yong said this, everyone had no complaints and started patrolling.

Of course, the focus of the task is still on the investigation and forensic side.

"Old Liu, what do you think?"

Wang Changjiang looked at the situation under the bridge and frowned deeply.

The Shizi River was originally the channel under the Lion Rock Bridge. The Shizi River stopped flowing more than [-] years ago because the water flow decreased.

But because a river once flowed through it, the land in the river here is very fertile, and there are dense weeds under the bridge.

At first glance, some places are taller than people.

There are only some places covered with sand and gravel, like bald spots on a person's head, scattered across the river.

"I suggest starting from the east and working your way to the west."

Liu Guodong pointed under the bridge and then explained his suggestion: "There are access roads on the east side of the entire river, but there is farmland on the west side, and the nearest lane change there is one kilometer away."

"If the other party really killed Wang Mingshan and buried the body under the Lion Rock Bridge, how would they transport the body here?"

"Most likely, they drove here from the east side, because there is farmland to the west. The other party parked the car 1 kilometer away, then carried the body across the farmland, and then came back to bury the body. It is unlikely."

"In addition, it was August when Wang Mingshan disappeared. In August, the grass under the bridge was already very lush. In this case, if the other party really buried the body here, lying through the weeds, it would be possible to penetrate deep inside. Not big either.”

"After all, not only is it difficult to pass through weeds, but it also easily creates a path for weeds to lie down. If someone pays attention, it is likely to be discovered."

"So, I suggest starting from the east side of the bridge, pushing it from both sides, and checking every 1.1 meters."

Wang Changjiang nodded, obviously agreeing with Liu Guodong's suggestion.

"Do you have any other ideas?"

"I have a little."

What Lu Chuan was holding was a variable frequency spectrometer. "If Wang Mingshan was buried under the bridge five years ago, then his body must have decomposed and become skeletal by now."

"Human bones contain a lot of phosphorus. After the bones are skeletal, the phosphorus will naturally volatilize."

Everyone knows this. Novels often write about people seeing will-o'-the-wisps floating in mass graves. In fact, this is not a fiction, but true.

Scientifically speaking, it is a phenomenon that occurs when phosphorus volatilizes and oxygen in the air meets with the oxygen in the air to produce a chemical reaction after the corpse skeleton becomes skeleton.

Because the flame produced after the oxidation and combustion of phosphorus and oxygen is green, the will-o'-the-wisps you see are all green.

However, this generally requires a large number of corpses and the skeletons are gathered together to produce this phenomenon. Generally speaking, the amount of phosphorus volatilized from individual skeletons is very small, and it is unlikely to produce will-o'-the-wisps.

"After the phosphorus produced by a single corpse volatilizes, it is unlikely to produce a will-o'-the-wisp, which is the spontaneous combustion of phosphorus. However, through irradiation with a variable frequency spectrometer, it is possible to see some special phenomena."

Here, Lu Chuan's explanation was not particularly clear. This method is called gas chromatography.

The principle is very simple. Any substance will have different affinities in the chromatogram. Under the irradiation of a certain laser light source, visible light reactions may occur.

In addition to gas chromatography, there is also liquid chromatography. Compared with gas chromatography, liquid chromatography is more accurate and the intuitive response obtained is more direct.

But using liquid chromatography requires the substance itself to be dissolved, requiring testing.

Now this situation is to determine the position of the body. Naturally, there is no dissolution of the bones themselves, so this time gas chromatography should be used.

After determining the location to start the search and the specific working methods, the action is ready to begin.

The members of the second operation team were divided into four people to carry out vigilance, and other personnel participated in the search work.

Lu Chuan is debugging a variable frequency laser spectrum analyzer. If he wants to discover the presence of phosphorus, the most important thing is to find the corresponding laser frequency. Different concentrations of phosphorus volatiles will also have slightly different laser frequencies, so Lu Chuan needs to Stop debugging.

In addition to Lu Chuan's method, others also have their own methods.

Finding corpses is one of the most important tasks of a criminal police officer. There have been cases of finding corpses in the wild before.

According to past work experience, if there is vegetation growing in the place where corpses are hidden in the wild, it will be more lush than other nearby vegetation.

This impact can be divided into short-term and long-term.

The short-term impact is that during the decay process of the corpse, the flesh and blood decompose, which will produce a large amount of organic fertilizer, which is absorbed by the vegetation and will naturally grow better.

But in this case, the corpse is usually not buried deep enough, and the organic matter from the decayed flesh and blood will be absorbed by the plants.

In most cases, the bodies are buried at a depth that the roots of ordinary herbaceous plants cannot reach.

In this case, the short-term impact will not be obvious, but as time goes by, the organic matter in the bones will gradually decompose and volatilize, and slowly penetrate into the soil.

This will also cause the plants near the burial site to grow more luxuriantly, and last for a long time, one year, three years or even five or ten years.

"Everyone rushed to areas with particularly lush vegetation to see if there were any traces left."

If the other party was careless when burying the body, there might be belts, clothes, glasses and other items left behind.

If these things are found, the body will basically be found. Of course, in actual situations, this is very rare.

Especially since it has been five years since Wang Mingshan disappeared. Even if the soil surface was different from other places due to stirring, five years later, it has become the same.

(End of this chapter)