Method for liquid environment monitoring and liquid environment monitoring system

1. A method for in-situ accumulation of one or more substances from a liquid environment, the method including the steps of:

placing a frame arrangement comprising a shell, a chamber, and a cartridge with an inlet in the liquid environment, wherein the shell at least partly surrounds the cartridge and the cartridge comprises a sorbent, wherein the sorbent is adapted for accumulating a specific substance or a specific group of substances, wherein the shell has diffusion gaps for diffusion of liquid from the liquid environment into the shell, such that the inlet of the cartridge is in direct contact with the diffused liquid from the liquid environment;

driving a liquid volume through the sorbent by negative pressure; and

repeating the act of driving as a function of time.

2. The method according to claim 1 , wherein the act of driving is performed by changing a volume of the chamber having an initial chamber volume in liquid connection with the cartridge.

3. The method according to claim 2 , wherein the act of driving is performed by increasing the chamber volume of the chamber.

4. The method of claim 2 , wherein the act of driving is performed by a pressure difference at the chamber relative to the liquid environment, while the chamber has a fixed chamber volume.

5. The method of claim 2 , wherein the act of driving includes resetting the chamber to the initial chamber volume.

6. The method of claim 1 , wherein the act of repeating includes an act of hibernating as a function of time between the acts of driving.

7. The method according to claim 6 , wherein the act of hibernating is performed for a hibernation time being between 0.1-24 hours, 0.1-10 hours, 0.5-5 hours, 0.75-3.5 hours, or 1-2 hours.

8. The method of claim 1 , wherein the method is performed over a period of 0.1-3 months, 0.5-2 months or 0.75-1.5 months, or 1 month.

9. A system for in-situ accumulation of one or more substances from a liquid environment, the system comprising:

a frame arrangement comprising a shell, and a cartridge with an inlet, wherein the frame arrangement is configured for supporting an actuator configured to drive a spindle defining a displacement axis, the spindle coupled to a flange, wherein the shell at least partly surrounds the cartridge, the cartridge comprises a sorbent adapted for accumulating a specific substance or a specific group of substances, and wherein the shell has diffusion gaps for diffusion of the liquid from the liquid environment into the shell, such that the inlet of the cartridge is in direct contact with the diffused liquid from the liquid environment;

the flange configured for a displacement along the displacement axis, the flange supporting a piston crown configured to operate in a chamber;

the chamber defining a chamber volume as a function of the piston crown, the chamber having means for being secured to the frame arrangement, and being in a liquid connection with the cartridge, wherein the act of driving a liquid volume through the sorbent by negative pressure is performed by changing a volume of the chamber having an initial chamber volume; and

a means configured and arranged to

repeat the act of driving as a function of time.

10. The system of claim 9 , wherein the system further including

two or more piston crowns,

two or more chambers, and

two or more cartridges positioned symmetrically around the displacement axis.

11. The system of claim 9 , wherein the liquid connection includes an exhaust configured and arranged for expelling liquid from the chamber.

12. A non-transitory computer program comprising instructions to cause the system, according to claim 9 , to execute the acts of the method according to claim 1 .

13. A non-transitory computer-readable medium having stored thereon the computer program of claim 12 .