The present disclosure provides an integrated collection, filtration, and analysis system which is configured to automatically collect fluid samples from a surrounding open water environment, isolate floating particles of a target size range, and perform analysis on the collected particles in-situ. The particles may also be filtered by one or more parameters other than size, and also provided herein is a two-stage vortex filter specially adapted to isolate floating particles of a desired density range from a fluid.

A method of controlling sampling at a plurality of mobile ambient sensors, comprising: providing a plurality of ambient sensors, each sensor moving periodically along a predefined route; receiving one or more desired measuring locations; and assigning to a first one of the sensors a first sampling location, which is at or near the desired measuring location.

In one embodiment, a cartridge includes at least one compartment and a reagent in the at least one compartment. The reagent is a chemical composition for testing at least one of soil and vegetation for a chemical contained in the soil or vegetation. The reagent can be used in a soil and/or vegetation analysis test. The cartridge can contain an authentication chip to ensure that the reagent is the correct reagent for the analysis test.

In an embodiment, a system for measuring soil element concentration in a field in real time is disclosed. The system comprises an extraction apparatus coupled to a mobility component configured to move the system in the agricultural field. The extraction apparatus configured to receive a plurality of soil samples successively from a soil probe coupled to the mobility component, when the mobility component is operating. The extraction apparatus containing an extractant solution that is a solvent of the soil samples. In addition, the extraction apparatus comprising a mixer that is configured to mix the soil samples with the extractant solution, thereby forming a solution mix. The system also comprises a chemical sensor coupled to the extraction apparatus, the chemical sensor configured to measure a concentration level of a soil element in the solution mix. Furthermore, the system comprises a processor coupled to the chemical sensor, the processor configured to calculate a concentration level of the soil element in each of the plurality of soil samples after the soil sample is received by the extraction apparatus and before a successive soil sample is received by the extraction apparatus.

An unmanned aerial vehicle detector includes an unmanned aerial vehicle, a pump/detector combination on the unmanned aerial vehicle and a tube including a rigid section and a flexible section. The tube is connected at a proximal end to the pump/detector combination. The pump/detector combination is configured to draw gas samples from a distal end of the tube to the detector and to detect a level of a gas drawn from within a prescribed distance above ground level.

An air sampling system and method are provided to collect air samples from a plurality of air sample inlets. Before or after transmitting an air sample originating from one of the sample inlets, a signal gas is transmitted via the sample line in accordance with one of a plurality of predefined burp patterns, each of which uniquely corresponds to a different one of the sample inlets. The sample line is monitored for the signal gas in accordance with the predefined burp patterns. Based on detection of the signal gas in the sample line in accordance with one of the predefined burp patterns, a related action is taken. The related action can be identifying the sample inlet from which the air sample originated, or further transmitting the air sample via the sample line.

In an embodiment, a computer-implemented method of tracking soil sampling in a field is disclosed. The method comprises receiving, by a processor, digitally stored field map data and digitally stored sampling data. The method further comprises displaying, by the processor, a field map depicting the first set of sampling points in a computer-generated graphical user interface. In addition, the method comprises receiving a selection of a first sampling point and displaying first sampling data associated with the first sampling point. The method also comprises receiving an update indicating that a soil sample has been collected at the first sampling point. Finally, the method comprises determining a second sampling point at which a next soil sample is to be collected and displaying the second sampling point in the field map.

The present invention relates an indicator system for assessing a reduction state of unconsolidated material that includes a delivery tube defining an interior chamber, and a substrate disposed within the interior chamber and including a reactive coating thereon. The reactive coating is at least partially removable from the substrate upon exposure to a reducing condition of unconsolidated material over a period of time. An indicator device including a reactive coating comprising a manganese oxide is also disclosed.

An apparatus and a method for identifying one or more sources of an airborne pollutant in a geographical area and for mitigating release of the airborne pollutant, comprising: receiving emission data and vehicle location data associated with a plurality of corresponding vehicles in the geographical area; receiving ambient air quality data for respective locations in the geographical area; apply a vehicle emission plume air dispersion model to process the received emission data, the received vehicle location data, and the received ambient air quality data; identify one or more principal sources of the airborne pollutant based on the processed emission data, vehicle location data, and ambient air quality data; and transmit an instruction related to one or more vehicles associated with the one or more identified principal sources of the airborne pollutant.

A filter-based air sampler, more specifically a filter-based air sampler capable of integration into small unmanned aerial systems is disclosed. The filter-based air sampler may include a filter assembly which has as its component parts: an open faced air intake component, a filter, and a filter support that has a central supporting grid. The filter assembly may joined to the housing of a fan, such as a centrifugal fan, with the supporting grid of the filter support being disposed over the air inlet of the fan.